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GIA 4.28ct Tanzanite VS2 Diamond Platinum Ring: Featured in this lot is this 4.28ct tanzanite VS2 diamond platinum ring with GIA and GGA paperwork. The ring is polished, stamped, and tested platinum construction that is marked as follows: Oscar Fri

7 days Left

GIA 4.28ct Tanzanite VS2 Diamond Platinum Ring

North American Auction Co.

Est. $20,000-$30,000

Platinum GIA Certified 2.81ct Oval Tanzanite Diamond Cocktail Ring: Platinum GIA Certified 2.81ct Oval Tanzanite Diamond Cocktail Ring This exquisite cocktail ring features a stunning 2.75ct natural oval tanzanite, beautifully prong set in solid platinum with a GIA ce

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Platinum GIA Certified 2.81ct Oval Tanzanite Diamond Cocktail Ring

Est. $2,015-$2,619

18K WHITE GOLD ENGAGEMENT RING 19.60CT.NATURAL TANZANITE CUSHION GIA CERT: 18K WHITE GOLD ENGAGEMENT RING 19.60CT.NATURAL TANZANITE CUSHION GIA CERT GORGEOUS 18k white gold engagement tanzanite ring cushion shape GIA CERT. Center natural tanzanite in cushion shape weight 19.

17 hrs Left

18K WHITE GOLD ENGAGEMENT RING 19.60CT.NATURAL TANZANITE CUSHION GIA CERT

Est. $33,915-$37,905

GIA Certified 27.35ct natural Blue Tanzanite diamonds ring 18kt Three Stone**: Title: GIA Certified 27.35ct natural Blue Tanzanite diamonds ring 18kt Three Stone** Description: Royal Raised Three stone Tanzanite Ring. GIA Certified: 27.35ct. Natural tanzanite Cushion cut Excelle

GIA Certified 27.35ct natural Blue Tanzanite diamonds ring 18kt Three Stone**

Chairish Auctions

Est. $25,000-$30,000

$10,000

14K WHITE GOLD ENGAGEMENT RING 19.60CT.NATURAL TANZANITE CUSHION GIA CERT: 14K WHITE GOLD ENGAGEMENT RING 19.60CT.NATURAL TANZANITE CUSHION GIA CERT GORGEOUS 14k white gold engagement tanzanite ring cushion shape GIA CERT. Center natural tanzanite in cushion shape weight 19.

17 hrs Left

14K WHITE GOLD ENGAGEMENT RING 19.60CT.NATURAL TANZANITE CUSHION GIA CERT

Est. $22,015-$24,605

GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold: GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold This cocktail ring features a large, natural cushion-cut tanzanite certified by GIA, showcasing a vibrant blue-violet color. The

2 days Left

GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold

Est. $22,020-$24,773

27.22 Cts GIA Blue Tanzanite: Collector-grade 27.22 cts GIA Blue Tanzanite (GIA certified) with vibrant saturation and rich color presence. Suited for a luxury earrings; a standout addition to any gemstone collection.

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27.22 Cts GIA Blue Tanzanite

Nile Jewels Co Ltd

Est. $66,000-$132,000

GIA Certified 62.60ct Natural Blue Cushion Cut Tanzanite Magnificent+: Title: GIA Certified 62.60ct Natural Blue Cushion Cut Tanzanite Magnificent+ Description: MAGNIFICENT JEWELS Please be sure to visit all our listed items. Tanzanite Royale. GIA CERTIFIED 62.60ct. Natu

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GIA Certified 62.60ct Natural Blue Cushion Cut Tanzanite Magnificent+

Chairish Auctions

GIA Certified 27.35ct natural Blue Tanzanite diamonds ring 18kt Three Stone**: Title: GIA Certified 27.35ct natural Blue Tanzanite diamonds ring 18kt Three Stone** Description: Royal Raised Three stone Tanzanite Ring. GIA Certified: 27.35ct. Natural tanzanite Cushion cut Excelle

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GIA Certified 27.35ct natural Blue Tanzanite diamonds ring 18kt Three Stone**

Chairish Auctions

GIA Certified 58.21ct Natural Blue Cushion Cut Tanzanite Magnificent+: Title: GIA Certified 58.21ct Natural Blue Cushion Cut Tanzanite Magnificent+ Description: Magnificent Jewels Please be sure to visit all our listed items. Tanzanite Royale. GIA CERTIFIED 58.21ct. Natu

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GIA Certified 58.21ct Natural Blue Cushion Cut Tanzanite Magnificent+

Chairish Auctions

22.58 Cts GIA Round Tanzanite: GIA-certified round Tanzanite with exceptional spread and depth; 22.58 cts, measurement 16 × 16 × 12 mm.

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22.58 Cts GIA Round Tanzanite

Nile Jewels Co Ltd

Est. $10,000-$18,000

GIA Certified Natural Tanzanite Bead Necklace 12417**: Title: GIA Certified Natural Tanzanite Bead Necklace 12417** Description: GIA Certified Natural Tanzanite Bead Necklace 12417 $18,000.00 PRODUCT DESCRIPTION GIA Natural Tanzanite Bead Necklace. Report

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GIA Certified Natural Tanzanite Bead Necklace 12417**

Chairish Auctions

16.86 cts GIA Certified Tanzanite: Collector-grade 16.86 cts GIA Tanzanite (GIA certified) with excellent luster and refined make. Suited for a investment collection piece; perfect for a one-of-a-kind creation.

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16.86 cts GIA Certified Tanzanite

Nile Jewels Co Ltd

Est. $37,500-$75,000

GIA Certified 8.50ct Natural Heart Tanzanite Diamond Necklace 14kt Gold Prime**: Title: GIA Certified 8.50ct Natural Heart Tanzanite Diamond Necklace 14kt Gold Prime** Description: MAGNIFICENT JEWELSGIA Certified Tanzanite Heart Raised Dome 8.50ct. Natural Tanzanite Necklace VS cl

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GIA Certified 8.50ct Natural Heart Tanzanite Diamond Necklace 14kt Gold Prime**

Chairish Auctions

GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7: GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7 This elegant ring is crafted from 18K yellow gold and features a GIA certified tanzanite weighing 4.61 carats. Accentuating the centerpiec

6 days Left

GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7

Est. $8,239-$9,268

16.00 Cts GIA Certified Tanzanite: Impressive 16.00 cts GIA Tanzanite (GIA certified) with excellent luster and high visual impact. Suited for a statement cocktail ring; a standout addition to any gemstone collection.

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16.00 Cts GIA Certified Tanzanite

Nile Jewels Co Ltd

Est. $25,500-$51,000

GIA CERTIFIED NATURAL 15.06CT 18KT GOLD NATURAL TANZANITE DIAMOND RING **: Title: GIA CERTIFIED NATURAL 15.06CT 18KT GOLD NATURAL TANZANITE DIAMOND RING ** Description: MAGNIFICENT JEWELS GIA 13.56CT Natural Tanzanite Excellent Octagonal Modified brilliant cut Clean VS Clari

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GIA CERTIFIED NATURAL 15.06CT 18KT GOLD NATURAL TANZANITE DIAMOND RING **

Chairish Auctions

GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold: GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold This cocktail ring features a large, natural cushion-cut tanzanite certified by GIA, showcasing a vibrant blue-violet color. The

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GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold

8.83 Cts GIA Certified Tanzanite: Flawless-looking blue Tanzanite with excellent presence and strong color; 8.83 cts, measurement 12 × 11 × 8 mm

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8.83 Cts GIA Certified Tanzanite

Nile Jewels Co Ltd

Est. $3,000-$5,000

2.87ct V-AAA Cushion Cut Ultra Fine Violet Tanzanite Polished Gem Stone GIA: 2.87ct V-AAA Cushion Cut Ultra Fine Violet Tanzanite Polished Gem Stone For Auction Is A 2.87ct Extra Fine Violet Tanzanite Cushion Cut / Faceted Stone. This Piece Has Excellent Polish

May 28, 2026

2.87ct V-AAA Cushion Cut Ultra Fine Violet Tanzanite Polished Gem Stone GIA

Weatherham Estate Treasures

Est. $1,000-$1,500

2.60ct V-AAA Cushion Cut Ultra Fine Violet Tanzanite Polished Gem Stone GIA: 2.60ct V-AAA Cushion Cut Ultra Fine Violet Tanzanite Polished Gem Stone For Auction Is A 2.60ct Extra Fine Violet Tanzanite Cushion Cut / Faceted Stone. This Piece Has Excellent Polish

May 28, 2026

2.60ct V-AAA Cushion Cut Ultra Fine Violet Tanzanite Polished Gem Stone GIA

Weatherham Estate Treasures

Est. $1,000-$1,500

GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7: GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7 This elegant ring is crafted from 18K yellow gold and features a GIA certified tanzanite weighing 4.61 carats. Accentuating the centerpiec

23 hrs Left

GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7

Est. $5,005-$6,506

GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold: GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold This cocktail ring features a large, natural cushion-cut tanzanite certified by GIA, showcasing a vibrant blue-violet color. The

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GIA Certified Cushion Tanzanite and Diamond Halo Ring in 18k White Gold

GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7: GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7 This elegant ring is crafted from 18K yellow gold and features a GIA certified tanzanite weighing 4.61 carats. Accentuating the centerpiec

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GIA 4.61 Ct Tanzanite and Diamond 18K Yellow Gold Ring Size 7

$4,880(18 bids)

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