Showing posts with label sapphire. Show all posts
Showing posts with label sapphire. Show all posts

Wednesday, April 28, 2010

Red-hot diamond on block at Sotheby's Australia

source : nationaljewelernetwork.com
April 01, 2010

Red-hot diamond on block at Sotheby's AustraliaThe 0.82-carat center stone of this ring will mark the first red diamond to be offered for public auction in Australia. The ring is estimated at as much as $921,556 and also features fancy blue diamonds and brilliant-cut colorless diamonds set in platinum.


Sydney, Australia--Sotheby's Australia's upcoming April 12 sale of antique and contemporary jewelry will be a significant one for the auction house. The event will mark the Australian branch's first standalone jewelry sale, with the highlight slated to be the first red diamond ever offered for public auction in Australia.

The 0.82-carat, fancy purplish-red Argyle diamond is set into a ring and is flanked by a pair of fancy blue diamonds in a round brilliant-cut diamond surround, all mounted in platinum. Its value is estimated at between 700,000 and 1 million Australian dollars (between about $645,065 and $921,556) and will be accompanied by a letter from Argyle Diamonds attesting to its rarity.

Sotheby's said in a media release that despite the notable discovery of the Argyle pink diamond deposits in Western Australia, less than a handful of red diamonds have been discovered, and connoisseurs have long considered red diamonds to be among the most precious and rare of diamonds.

The April 12 sale will offer even more superb examples of colored stones, including a double strand of graduated emerald beads accented with diamond-set rondelles (estimated between $9,676 and $11,519), a sapphire and diamond ring (estimated between $23,034 and $32,248) and an emerald and diamond ring (estimated between $64,497 and $82,907). ...

Saturday, April 17, 2010

Jewelry Art Awards 2009 of Jewelry Artist Magazine

The 2009 Jewelry Arts Awards

Jewelry Artist magazine's annual competition yields 10 outstanding winners

Pins & Brooches


FIRST WAVE

Naomi Sarna
First Place, Pins/Brooches
(Also Best of Competition)
FIRST WAVE
32mm x 23mm. 18K gold, Chinese freshwater pearl, VS diamonds, Montana sapphires, Contra-luz opals, Imperial topaz. Handmade lost-wax gold setting surrounding pegged and epoxy-set pearl. All stones are pave set with bright-cut finishing. Photo: Azad. sarna.naomi@gmail.com, naomisarnadesigns.com




JUBILANT HEART

Naomi Sarna
Second Place, Pins/Brooches
JUBILANT HEART.
38.5mm x 43.3 mm. 87.5 carat rose quartz, 18K gold, VS diamonds, Montana sapphire, Impreial topaz, Contra-luz opal. Lost-wax carved and gold-cast setting. Photo: Azad. sarna.naomi@gmail.com, naomisarnadesigns.com

Bracelets

MOON PHASES CUFF

Genevieve Yang
First Place, Bracelets
MOON PHASES CUFF.
2.0" x 2.5" x 1.75". Fine silver, sterling silver edge, and 24K gold. Spray of flush set VS F plus diamonds, Hand fabricated, forged, roller embossed, keumboo, flush setting. Photo: Hap Sakwa. genevieve@genevieveyang.com, www.genevieveyang.com


Alex Maryaskin Second Place, Bracelets UNTITLED

Alex Maryaskin
Second Place, Bracelets
UNTITLED.
8". 14K yellow gold, Australian opal, and diamonds. Filigree work, scroll work, and spiral and granulation detail. Photo: Ralph Gabriner. 757-596-0481, www.artoffiligree.com

Earrings

NAUTILUS EARRINGS

Nanz Aalund
First Place, Earrings
NAUTILUS EARRINGS

33mm x 5mm x 26mm each earring. 22K gold and epoxy resin. Corrugated 22K gold is spiraled with epoxy resin cast into the spiral. Fabricated ear clip. Photo: Doug Yaple. nanz@nanzaalund.com, www.nanzaalund.com

Pendants/Necklaces

TWENTY ONEMarie Scarpa
First Place, Pendants/Necklaces
TWENTY ONE. 3.25" x 3" x 5". 20-gauge Argentium sheet, 3mm Argentium heavy walled tubing, 12-gauge round Argentium wire, 36-gauge 3½% platinum silver wire, 34-gauge 18K yellow gold wire, 7mm 1.51 carat whirlpool cut citrine, 2.5mm round faceted black spinels, 4.5 round white freshwater pearls. Fabrication including sawing and soldering, hand weaving, stone setting and hand polishing, and texturing. Photo: Hap Sakwa. 707-765-6558, www.mariescarpadesigns.com.

CELEBRATION SPROUT NECKLACE.Melissa Pedersen
Second Place, Pendants/Necklaces
CELEBRATION SPROUT NECKLACE. 25cm x 15cm x 3cm. Sterling silver, Argentium silver, 3mm fresh water pearls. Hand carved wax, lost wax casting, fused, constructed, and soldered. Photo by the artist. info@melissapedersen.com, www.melissapedersen.com.

Miscellaneous Jewelry

BROKEN CIRCLEJeffrey Appling
First Place, Miscellaneous Jewelry
BROKEN CIRCLE. 17" and 10mm. Sterling silver, 14K white gold, 14K yellow gold plate, 13mm faceted triangular black spinel, 2.0mm black diamonds, and 2mm colorless diamonds. Black rubber neoprene. Carved, cast, fabricated, flush set and tension set. Photo: Hap Sakwa. 760-322-2883, www.JeffreyAppling.com.

OBJECTRobin Antonsen
Second Place, Miscellaneous Jewelry
OBJECT. 6". Sterling silver hair pin. Constructed, rolling mill, hydraulic press, and patina. Photo by the artist. brightshadow@cheerful.com.

Rings

SURFER RINGSJeffrey Appling
First Place, Rings
SURFER RINGS. 15mm x 21mm x 29mm. Silver and copper with paint pigment cross-linked into the upper metal molecules, 2mm diamonds, 7.5mm freshwater cultured pearls. Carved, cast, tension set, flush set, baked. Photo: Hap Sakwa. 760-322-2883, www.JeffreyAppling.com.


SWAYL. Sue Szabo
Second Place, Rings
SWAY. 1.5" L x 0.375" W 1" D. Sterling silver, 4 carat pink sapphires, 0.33 carat burmese ruby. Hand fabricated, tube settings for gems. Photo: Ericka Crissman/Wired Images. www.lsueszabo.com

For information on entering your jewelry in the next competition, click here!

source : jewelryartistmagazine.com

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

Saturday, October 27, 2007

Sapphire : as a mineral

Sapphire
General
Category Mineral Variety
Chemical formula aluminium oxide, Al2O3
Identification

Color Every color except red (which is ruby)
Crystal habit massive and granular
Crystal system Trigonal
Cleavage None
Fracture Conchoidal, splintery
Mohs Scale hardness 9.0
Luster Vitreous
Refractive index 1.762-1.778
Pleochroism Strong
Streak White
Specific gravity 3.95-4.03
Fusibility infusible
Solubility insoluble
Other Characteristics Coefficient of thermal expansion 5e-6–6.6e-6/K
Sapphire refers to gem varieties of the mineral corundum, an aluminium oxide (Al2O3), when it is a color other than red. It can be found naturally or manufactured in large crystal boules for varied applications, including infrared optical components, watch faces, high-durability windows, and wafers for the deposition of semiconductors such as GaN nanorods.

The mineral corundum consists of pure aluminium oxide. Trace amounts of other elements such as iron, titanium and chromium give corundum their blue, yellow, pink, purple, orange or greenish color. Sapphire includes any gemstone quality varieties of the mineral corundum except the fully saturated red variety, which is instead known as ruby, and the pinkish-orange variety known as padparadscha.

source :wikipedia,the free encyclopedy
more information at : http://en.wikipedia.org/wiki/Sapphire