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tanzanite
19 mai 2016

Large and Impressive Tanzanite, Tanzania

Large and Impressive Tanzanite, Tanzania
Lot 1273. Large and Impressive Tanzanite, Tanzania. Weighing approximately 92.60 carats and measuring 31.90 x 22.58 x 16.10mm. Sold for US$ 37,500 (€33,491). Photo: Bonhams. This fine oval-cut stone has an exceptional saturation of blue-violet. Both its...
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23 avril 2016

Tiffany & Co. L’Art de la Transformation: Tanzanite, Aigue Marine et Tourmaline verte.

Tiffany & Co. L’Art de la Transformation: Tanzanite, Aigue Marine et Tourmaline verte.
Tiffany & Co. Bague Dôme en tanzanite. D’élégantes rangées de diamants et de saphirs épousent une tanzanite luxuriante, tout en saisissant la beauté changeante de la nature dont les couleurs et les formes évoluent sans cesse. Convoitée pour sa profonde...
22 janvier 2014

Martin Katz jewelry

Martin Katz jewelry
Martin Katz Pavé Teardrop & Rose-Cut Drop Earrings set in 18K white gold; 18 round rose-cut diamonds weighing 1.95 carats and microset with 128 diamonds weighing 1.04 carats. Photo courtesy of Martin Katz. Martin Katz Australian Black Opal and Diamond...
29 décembre 2013

Tanzanite, Fluorite, Calcite, Stolzite, Apophyllite, Quartz, Stilbite

Tanzanite, Fluorite, Calcite, Stolzite, Apophyllite, Quartz, Stilbite
Apophyllite over Quartz and Stilbite Stolzite Fluorite, Calcite // Elmwood Mine, Smith County, Tennessee, USA Tanzanite Natural Gem Crystal.
21 avril 2012

Large gem Tanzanite crystal, Merelani Hills, Umba Valley, Lelatema Mts, Arusha Region, Tanzania

Large gem  Tanzanite crystal, Merelani Hills, Umba Valley, Lelatema Mts, Arusha Region, Tanzania
Large gem Tanzanite crystal, Merelani Hills, Umba Valley, Lelatema Mts, Arusha Region, Tanzania . photo Heritage Auctions Tanzanite: one of the most talked-about 'new' gemstones of the last couple of decades is, with very minor exceptions, a 'one locality'...
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4 février 2009

Tanzanite and diamond necklace

Tanzanite and diamond necklace
Tanzanite and diamond necklace The delicate necklace of narrow bars and quatrefoils set throughout with small round diamonds, supporting an oval tanzanite weighing approximately 15.50 carats, the total diamond weight approximately 8.75 carats, mounted...
4 février 2009

Unmounted tanzanite

Unmounted tanzanite
Unmounted tanzanite Of cushion-shape, weighing 49.04 carats. Estimate 25,000—30,000 USD. Lot Sold 31,250 USD Sotheby's. Important Jewels. 04 Feb 09. New York www.sothebys.com photo courtesy Sotheby's
1 février 2009

Dior Joaillerie. Bague du "Coffret de Victoire"

Dior Joaillerie. Bague du "Coffret de Victoire"
Dior Joaillerie. Bague du "Coffret de Victoire" montée sur or jaune composée de diamants, tanzanite, tourmaline Paraïaba et améthystes. Prix sur demande. ©D.R.
18 novembre 2008

Precious 27,90ct tanzanite (Zoisit). Tanzania,

Precious 27,90ct tanzanite (Zoisit). Tanzania,
Precious 27,90ct tanzanite (Zoisit). Tanzania, 1 oval natural crimson-blue tanzanite (Zoisit) in star-cut ca.27,90ct, 20,30x16,46x11,64mm. DSEF, Gemstone laboratory report no.018693, Idar-Oberstein 2008. No indication of heat treatment. Estimation : 18...
10 octobre 2008

An unmounted tanzanite

An unmounted tanzanite
An unmounted tanzanite the pear-shaped tanzanite weighing 49.67 carats. Estimate: $10,000 - 15,000 (Copyright © 2002-2008 Bonhams 1793 Ltd., Images and Text All Rights Reserved) Bonhams. Fine Jewelry, 14 Oct 2008. San Francisco, Los Angeles and New York...
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