Monday, December 31, 2007

Monday, December 24, 2007

Link to a forum : Pink Diamond Ring

26/11/2007 (11 posts)

First comment from this forum :

"I have wanted a pink for a long time now and my anniversary is coming up, my husband always gets me what I want. So my question is where should I get my pink? Anybody have any suggestions? I want a nice stone and it must be certified, I live in California, but I will consider online purchases too. Thanks guys.

Annie"

see this forum at :
http://www.jewelryforum.net/forum/showthread.php?t=575

Thursday, December 13, 2007

I hope you all had a Merry Holiday!


Finally I have a moment to post, and catch up with everyone! It seems the last several weeks have been a blur of activity...from participating in shows, to spending time with family, and seeing old friends....and getting my home ready for the Holiday's. The last month has flown by, and I can't believe that Christmas was here and gone so quickly!

It was a pleasure to meet some new friends at my last few shows of the year, and see so many familiar faces too. Here are a couple of pictures from the last of my 2007 shows for those of you that were not able to attend..... Here are a few special moments from our Holiday this year.....Simon decorating cookies & cakes with his cousins....
Simon hanging ornaments on our tree......
Placing little bulbs on Grandma's ceramic tree with his cousin....
His first time ice skating....
Visiting with Santa on the Christmas Train ride......
My grandma "Meme" and my great-grandma Nina....there are 5 generations of us still smiling! Nina is the oldest at 94 years young, and Simon is the youngest at 4.
Simon opening his first present on Christmas eve....
My hubby Ryan (on the right) goofing around with cousin Art on Christmas eve.....we do a "silly gift" exchange, and Ryan picked a package of fake moustaches....



I managed to squeeze in some time to hit the local monthly antique faire here in Sacramento looking for a present for my father, as well as a few goodies for myself. Here are the treasures I came home with just for me.....a lovely little doll size crazy quilt, some trinkets for my art, and an antique pair of leather & velvet baby shoes with pretty blue buttons.....


I have all sorts of new ideas running around in my head of things that I would like to make, but first I have to get some early spring cleaning and organizing done around the house. Are any of you feeling that early spring "itch"?

Tuesday, December 11, 2007

Link to a forum : Syntethic Gemstones?

First comment from this forum :

Aug 2004 (16 posts)
"How can I tell if gemstone jewelry I buy online is not man made or syntethic?"



Link to a forum : Diamond Necklace

First comment from this forum :

Sep 2005 (10 posts)
"This diamond necklace is selling for half of it's appraised value. I love it, I would love to wear it to my wedding, but someone told me diamonds are for ladies who have been married for 6 years. Is this true?"

Thursday, December 6, 2007

Amethyst

amethyst
amethyst
amethyst
amethyst

Amethyst : as a mineral

Amethyst is a purple variety of quartz often used as an ornament. The name comes from the Greek a ("not") and methustos ("to intoxicate"), a reference to the belief that the stone protected its owner from drunkenness; the ancient Greeks and Romans wore amethyst and made drinking vessels of it in the belief that it would prevent intoxication.
Quartz
Amethyst
General
Category Mineral variety
Chemical formula Silica (silicon dioxide, SiO2)
Identification
Color purple
Crystal habit 6-sided prism ending in 6-sided pyramid (typical)
Crystal system rhombohedral class 32
Twinning Dauphine law, Brazil law and Japan law
Cleavage None
Fracture Conchoidal
Mohs Scale hardness 7 - lower in impure varieties
Luster Vitreous/glossy
Refractive index nω = 1.543 - 1.553 nε = 1.552 - 1.554
Optical Properties Uniaxial (+) (Positive)
Birefringence +0.009 (B-G interval)
Pleochroism None
Streak White
Specific gravity 2.65 constant; variable in impure varieties
Melting point 1650 (±75) °C
Solubility H2O insoluble
Diaphaneity Transparent to translucent
Other Characteristics Piezoelectric
Chemistry

Amethyst is the purple variety of quartz, its chemical formula is SiO2.

In the 20th century, the color of amethyst was attributed to the presence of manganese. However, since it is capable of being greatly altered and even discharged by heat, the color was believed by some authorities to be from an organic source. Ferric thiocyanate was suggested, and sulfur was said to have been detected in the mineral.

More recent work has shown that amethyst's coloration is due to ferric iron impurities.[1] Further study has shown a complex interplay of iron and aluminium is responsible for the color.[2]

On exposure to heat, amethyst generally becomes yellow, and much of the citrine, cairngorm, or yellow quartz of jewelry is said to be merely "burnt amethyst." Veins of amethystine quartz are apt to lose their color on the exposed outcrop[citation needed].

Synthetic amethyst is made to imitate the best quality amethyst. Its chemical and physical properties are so similar to that of natural amethyst that it cannot be differentiated with absolute certainty without advanced gemological testing (which is often cost prohibitive). There is one test (which is not 100 percent certain) based on "Brazil law twinning" (a form of quartz twinning where right and left hand quartz structures are combined in a single crystal[3] which can be used to identify synthetic amethyst rather easily. In theory however it is possible to create this material synthetically as well, but this type is not available in large quantities in the market.[4]

Composition

Amethyst is composed of an irregular superposition of alternate lamellae of right-handed and left-handed quartz. It has been shown that this structure may be due to mechanical stresses. As a consequence of this composite formation, amethyst is apt to break with a rippled fracture or to show "thumb markings," and the intersection of two sets of curved ripples may produce on the fractured surface a pattern something like that of "engine turning." Some mineralogists, following Sir David Brewster, apply the name of amethyst to all quartz which exhibits this structure, regardless of color.

Because it has a hardness of 7 on the Mohs scale, amethyst is treasured for its use in jewelry.

Hue and Tone

Amethyst occurs in a continuum of primary hues from a light slightly pinkish violet to a deep grape purple. Amethyst may exhibit one or both secondary hues, red and/or blue. The ideal grade is called "Deep Siberian" and has a primary purple hue of around 75 - 80 percent, 15-20 percent blue and (depending on the light source) red secondary hues.[4]

A polished amethyst gem stone.

A polished amethyst gem stone.

History

Amethyst was used as a gemstone by the ancient Egyptians and was largely employed in antiquity for intaglios. Beads of amethyst are found in Anglo-Saxon graves in England. It is a widely distributed mineral, but fine, clear specimens that are suitable for cutting as ornamental stones are confined to comparatively few localities. Such crystals occur either in the cavities of mineral-veins and in granitic rocks, or as a lining in agate geodes. A huge geode, or "amethyst-grotto," from near Santa Cruz in southern Brazil was exhibited at the Düsseldorf, Germany Exhibition of 1902. Many of the hollow agates of Brazil and Uruguay contain a crop of amethyst crystals in the interior. Much fine amethyst comes from Russia, especially from near Mursinka in the Ekaterinburg district, where it occurs in drusy cavities in granitic rocks. Many localities in India yield amethyst.

Museum-quality piece of Amethyst

Museum-quality piece of Amethyst

Geographic distribution

Amethyst occurs at many localities in the United States, but these specimens are rarely fine enough for use in jewelry. Among these may be mentioned Amethyst Mountain, Texas; Yellowstone National Park; Delaware County, Pennsylvania; Haywood County, North Carolina; Deer Hill and Stow, Maine. It is found also in the Lake Superior region. Amethyst is relatively common in northwestern Ontario, and in various locations throughout Nova Scotia, but uncommon elsewhere in Canada. Amethyst is produced in abundance from the state of Minas Gerais in Brazil where it occurs in large geodes within volcanic rocks. It is also found and mined in South Korea. The largest opencast amethyst vein in the world is in Maissau, Lower Austria.

6 carat (1.2 g) pear shape amethyst ring

6 carat (1.2 g) pear shape amethyst ring

Value

Traditionally included in the cardinal, or most valuable, gemstones (along with diamond, sapphire, ruby, and emerald), amethyst has lost much of its value due to the discovery of extensive deposits in locations such as Brazil. The highest grade Amethyst (called "Deep Russian") is exceptionally rare and therefore its value is dependent on the demand of collectors when one is found. It is however still orders of magnitude lower than the highest grade sapphires or rubies (Padparadscha Sapphire or "Pigeon Blood" Ruby) which can go for as much as $50,000 or more per carat.[4]

Amethyst such as the "Russian" quality (bluish purple key color) and such as material recently found in Georgia since 2005 (with some of the stones showing both blue hue and red flashes) and of which its top material is considered of the best quality presently available [5] still command prices of not more than $50 per carat.[6]

Amethyst in folklore and astrology

Amethyst is the birthstone associated with February. It is also associated with the astrological signs of Pisces, Aries (especially the violet and purple variety), Aquarius, and Sagittarius. It is a symbol of heavenly understanding, and of the pioneer in thought and action on the philosophical, religious, spiritual, and material planes. Ranking members of the Roman Catholic Church traditionally wear rings set with a large amethyst as part of their office.

The Greek word "amethystos" (αμέθυστος) basically can be translated as "not drunken." Amethyst was considered to be a strong antidote against drunkenness, which is why wine goblets were often carved from it. Supposedly, when a drunken Dionysus was pursuing a maiden called Amethystos, who refused his affections, she prayed to the gods to remain chaste. The goddess Artemis granted the prayer, transforming her into a white stone; humbled by Amethystos' desire to remain chaste, Dionysus poured wine over the stone she had become as an offering, dyeing the crystals purple.

Variants of the story include that Dionysus, the god of intoxication, had been insulted by a mortal and swore revenge on the next mortal who crossed his path, creating fierce tigers to carry out his wish; the mortal turned out to be a beautiful young woman, Amethystos, who was on her way to pay tribute to Artemis. Her life is spared by Artemis, who transforms the maiden into a statue of pure crystalline quartz to protect her from the brutal claws. Dionysus wept tears of wine in remorse for his action at the sight of the beautiful statue. The god's tears stained the quartz purple.[7] Another variation involves the goddess Rhea presenting Dionysus with the amethyst stone to preserve the winedrinker's sanity.[8]

Notes

  1. ^ Klein, Cornelis and Hurlbut, Cornelius S., 1985 Manual of Mineralogy (after JD Dana) 20th edition, p. 441, John Wiley & Sons, New York
  2. ^ Cohen, Alvin J., 1985, Amethyst color in quartz,the result of radiation protection involving iron', American Mineralogist, V. 70, pp 1180-1185
  3. ^ Quartz Page Twinning Crystals. Retrieved on 2007-05-28.
  4. ^ a b c Secrets of the Gem Trade; The Connoisseur's Guide to Precious Gemstones Richard W Wise, Brunswick House Press, Lenox, Massachutes., 2003
  5. ^ Bowling, Ryan L (2005). "Jackson Crossroads Amethyst Deposit, Wilkes County, Georgia". Mineralogical Record A 36 (6): 479(8). Retrieved on 2007-05-27.
  6. ^ Mountain Gems and Minerals, Little Switzerland, NC; one of the authors or Mineralogical Record and other articles and co-owner of the mine. Tucson showreport images: http://www.gamineral.org/t05-clarion_hotel.html
  7. ^ source
  8. ^ (Nonnus, Dionysiaca, XII.380)
source : http://en.wikipedia.org/wiki/Amethyst

Saturday, November 17, 2007

Diamond News : Uncertainty abounds as sightholders anticipate new list

November 16, 2007

By Michelle Graff

New York—The Diamond Trading Co. (DTC) acknowledged on Friday that it is an uncertain time for U.S. diamond dealers as they await the Dec. 12 release of the DTC's updated sightholder list.

Earlier in the week, in response to this uncertainty, the Diamond Manufacturers and Importers Association of America (DMIA) sent a letter addressed to DTC Managing Director Varda Shine underscoring the importance of retaining as many U.S. sightholders as possible.

On Friday, in an e-mail to National Jeweler, the DTC stated that it "understands that this may be a time of uncertainty for some, but we would reassure people that the selection process...doesn't favor anybody."

The DMIA's letter, copied to high-ranking government officials including Secretary of State Condoleezza Rice and New York Sen. Hillary Clinton, included an attachment breaking down the amount of aid the United States supplies to African nations, many of which are the world's top diamond producers.

In its response on Friday, the DTC said it supports producer countries' aspirations to improve local economies in southern Africa. But the response also pointed out that the DTC only supplies a small percentage of N.Y. sightholder requirements, and that the diamonds reserved for polishing in southern African amount to less than 5 percent of world diamond production.

Both the DTC and DMIA President Ronnie Friedman acknowledged that the letter from the DMIA to the DTC was the first of its kind.

In an interview on Thursday, Friedman said that while the DMIA always has communicated with the DTC, the letter marked "the first time we sent a letter like this in this kind of way."

Friedman was unavailable for comment on Friday.

The nine U.S.-based companies currently included on the DTC's sightholder list are: Almod Diamonds Ltd., Dynamic Diamonds Corp., Hasenfeld-Stein Inc., Julius Klein Diamonds LLC, Lazare Kaplan International Inc., Louis Glick Diamond Corp., Michael Werdiger Inc., Premier Gem (Group) and Stuller Inc.

Tuesday, November 13, 2007

HollyDaze & Vine

It was a wonderful show, just the thing to kick off off the Holiday's! Everyone's tables were packed full of goodies, and there was a nice variety of styles and mediums available. It was great to see old friends and catch up, and we always have a lot of fun at his show! Thank you to those of you that stopped by and took home a treasure for your collection.....I hope you enjoy them! Here are some pictures from the show...a few of my table....And here are some of the other lovely tables at the show.... first is Christy's and her delightful cloth folk...
And here is Ginny with her TroutCreek gang...Kitty with her creations....Here is Sharon's Table...I LOVE her new gnome designs!!And I met a new friend at the show....Cheri Williams...here is her fabulous table of paper whimsies...
Wendy and her incredible chocolate molds! I love the giant ones...so neat!The eclectic offerings of Edgar & Edgar....Some wonderful glass art by Charles Hall...Arbutus Hunter and her fun, retro inspired things....And a few close up pictures of some of my offerings that sold at the show.....See you at my next show..... the Holiday Art & Craft Festival sponsored by the Crocker Art Museum on Thanksgiving weekend. This three day show will have 80 artists in a wide range of styles and mediums. Please stop by and say "Hi" it will be a fabulous show!

Saturday, November 10, 2007

Ruby : as a mineral

Ruby is a light pink to blood red gemstone, a variety of the mineral corundum (aluminium oxide). The common red color is caused mainly by the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires. It is considered one of the four precious stones, together with the sapphire, the emerald and the diamond. Improvements used include color alteration, improving transparency by dissolving rutile inclusions, healing of fractures (cracks) or even completely filling them.

Prices of rubies are primarily determined by color (the brightest and best "red" called Pigeon Blood Red, command a huge premium over other rubies of similar quality). After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions will indicate the stone has been treated one way or another. Cut and carat (size) also determine the price.

more about ruby : http://en.wikipedia.org/wiki/Ruby

Ruby
Ruby
Ruby crystal before faceting, length 0.8 inches (2 cm)
General
Category Mineral variety
Chemical formula aluminium oxide with chromium, Al2O3::Cr
Identification
Color Red, may be brownish or purplish
Crystal habit Varies with locality. Terminated tabular hexagonal prisms.
Crystal system Trigonal
Cleavage No true cleavage
Fracture Uneven or conchoidal
Mohs Scale hardness 9.0
Luster Vitreous
Refractive index ~1.762-1.770
Pleochroism Orangey Red, Purplish Red
Ultraviolet fluorescence red under longwave
Streak white
Specific gravity 4.0
Melting point 2050°C
Fusibility perfectly
Solubility none
Diaphaneity transparent

Tuesday, November 6, 2007

Jewelry Art Awards 2007 of Jewelry Artist Magazine

source : Jewelry Artist

Jewelry Artist is pleased to announce the winners of our 2007 Jewelry Arts Awards. Entries for our sixth annual competition were judged by Todd Reed, a self-taught goldsmith and metalsmith who has been exploring the use of rough diamonds in his award-winning, signature jewelry since 1992; Robert Diamante, a professional photographer who has been photographing jewelry for the craft industry since 1993; and Thomas Mann, a jeweler committed to both the artistic and business sides of jewelry making, who has been active in the contemporary craft movement for more than 30 years.

Congratulations to the winners and our thanks to the judges and everyone who entered.

Jewelry Arts Awards 2007 Winners

Miscellaneous Jewelry

First Place: Daniel M. Nagy - Best of Competition
(also First Place, Miscellaneous Jewelry) Frutto di Mare

14K yellow and white gold 353.5g, 3pcs Tahitian pearls 9mm semi baroque, 2pcs 10.5 round AAA grade 86 pcs, 1.659 ct. brilliant cut diamonds. Wax carved and chased shells, hand cut handpiece, and engraved gemstone buttons. Original electronics only; workable inner part is rebuilt based on design and requirements. 200mm x 80mm x 70mm.
Photo: Arion Kudasz Gabor.


















Miscellaneous Jewelry

First Place: Daniel M. Nagy, Frutto di Mare, above.
Second Place: Blue Moon, Marie Scarpa

Maria Scarpa, Second Place
Miscellaneous Jewelry
Blue Moon, 18K gold and platinum, hand fabricated pin/pendant; bezel-set 18mm 7.15ct abalone pearl center and 64 spires divided into 3 levels. Woven, invisibly soldered. Embellished with 28 round faceted 2.0mm pink sapphires, 4 round faceted 2.5mm yellow sapphires, eight round faceted 2.5mm blue sapphires, 4 round faceted 2.9mm blue sapphires, 16 round faceted 3.0mm teal green tourmalines, 4 round faceted 3.5mm teal green tourmalines. Hand fabricated and hand woven. 2.25".









Earrings

First Place (tied): Dream Catcher, Jeffrey Appling
First Place (tied):
Whirlpool, Daniel M. Nagy




























Jeffrey Appling, First Place (tied)

Earrings (above)
Dream Catcher, platinum chain, 18K yellow and white gold. Two half-moon diamonds, two 5-point-star diamonds, six natural yellow diamonds, 2mm square and round ruby, blue and yellow sapphire, spessartite, tsavorite, blue/green tourmaline, amethyst, two half-moon drusy onyx tablets. Cast manufacture, hand fabrication, bezel, tube, bead, and mock (bead) setting for cubes. 62mm x 26.5mm.
Photo: Hap Sakwa.


Daniel M. Nagy. First Place (tied)
Earrings
Whirlpool, 18K white gold, 15.5g. Tahitian pearl AAA, 10mm round 2pcs. Computer designed, wax printed, chased, hand finished. 120mm x 20mm x 20mm.
Photo: Daniel M. Nagy.

























Rings

First Place: Pearl Protrusion, Jeffrey Appling
Second Place: Message, Daniel M. Nagy and Agnes Kertesz


Jeffrey Appling, First Place
Rings
(above)
Pearl Protrusion, 950 platinum, 8.5mm faceted black cultured pearl and 8.5mm faceted white cultured pearl, tsavorite garnets and pink sapphires. Hand carved wax and of cast manufacture, bead-set small round gemstones and hand carved (artwork) along outside borders. 10.5mm x 20mm. Photo: Hap Sakwa.

Daniel M. Nagy & Agnes Kertesz, Second Place
Rings
(above)
Message,
18K white gold 10.8g, Tahitian pearl AAA round 1pc 9.4mm, brilliant cut diamonds. 20mm x 15mm.

Bracelets

First Place: Salad Blues, Laura Parr
Second Place: Dragon of 4 Elements, Dmitriy Pavlov


Laura Parr, First Place
Bracelets
(above)
Salad Blues,
forged and riveted sterling silver sheet, wire, tube, copper sheet; ten 1.5 millimeter, tube-set and riveted sapphires; ink. 51mm x 82mm x 72mm.
Photo: Jeremy Addington.



Dmitriy Pavlov, Second Place
Bracelets
(above)
Dragon of 4 Elements,
pierced, bent, and engraved sterling silver. 51mm x 82mm x 72mm.
Photo: Galina Pavlova.

Pins & Brooches

First Place: Inception, Tricia Lachowiec
Second Place: Star, Wendy McAllister


Tricia Lachowiec, First Place
Pins/
Brooches (above)
Inception,
18K gold on sterling silver, copper, enamel, diamond, steel. Chasing and repoussé, enameling. 23⁄4" x 1-5⁄8" x 3⁄4".
Photo: Dean Powell.
Wendy McAllister, Second Place
Pins/Brooches
(above)
Star
, sterling silver, acrylic, lenticular lens, 24K gold leaf, fabricated silver brooch, fabricated double pinstem back; found objects: candle bobeche and child’s ruler. 3.5".
Photo: Ralph Gabriner.

Pendants & Necklaces

First Place: Mary Darwall
Second Place (tied): Evolution, Jeffrey Appling
Second Place (tied): Fruit
, Tricia Lachowiec


Mary Darwall, First Place
Pendants/Necklaces
(above)
Eleven turquoise cabochons, turquoise beads, freshwater pearls, glass seed beads, beading cloth, nylon thread, 49-strand wire, 14K closure, leather backing. Hand needle woven, bead appliqué, freeform peyote, branching stitches. 18".
Photo: John Yohman.
Jeffrey Appling, Second Place (tied)
Pendants/Necklaces
(above)
Evolution, 30.37ct drilled citrine intruded with malachite, coral, and lapis tubes, 3.66cts. Drilled-out citrine pavilion injected with gemstones, pendant area cast, and hand fabricated. 16", 30.5mm x 33mm.
Photo: Hap Sakwa.

Tricia Lachowiec, Second Place (tied)
Pendants/Necklaces
(above)
Fruit, oxidized sterling silver, electroformed copper, enamel, 14K gold, cognac diamonds, sapphires. Electroforming and enameling. 10" x 6-1⁄4" x 1-1⁄4".
Photo: Dean Powell.

source : Jewelry Artist