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Edwardian Platinum, Diamond and Synthetic Blue Sapphire Ring, Circa 1910: Edwardian Platinum, Diamond and Synthetic Blue Sapphire RingCirca 1910 Set with one square old mine-cut diamond weighing approximately 2.83 carats and one square cushion-cut synthetic sapphire, surrou

7 hrs Left

Edwardian Platinum, Diamond and Synthetic Blue Sapphire Ring, Circa 1910

Est. US$6,000-US$8,000

US$3,000(1 bid)

3.65ct Blue Sapphire, 2.10ctw Diamond and 18K Ring: 3.65ct Blue Sapphire, 2.10ctw VS1-VS2/G-H Diamond and 18K White Gold Ring - This item will come with a $52,000 insurance valuation report. An exquisite and highly refined ring showcasing an approximat

1 day Left

3.65ct Blue Sapphire, 2.10ctw Diamond and 18K Ring

GWS Auctions Inc.

Est. US$51,000-US$52,000

Platinum Unheated Blue Sapphire & Diamond Ring: Platinum Unheated Blue Sapphire & Diamond Ring. This ring includes one (1) blue oval double unheated natural sapphire corundum with a cabochon cut, weighing 12.34 cts (13.71 x 12.67 x 6.45mm). Thi

1 day Left

Platinum Unheated Blue Sapphire & Diamond Ring

Stuart Kingston

Est. US$5,000-US$7,000

18-Karat White-Gold, Blue Sapphire and Diamond Ring, Gross weight: 7.1 dwt., Shank size: 8-1/4: 18-Karat White-Gold, Blue Sapphire and Diamond RingSet with one cushion-cut blue sapphire weighing approximately 7 carats, surrounded by eighty-two round brilliant and fancy-cut diamonds weighing appr

7 hrs Left

18-Karat White-Gold, Blue Sapphire and Diamond Ring, Gross weight: 7.1 dwt., Shank size: 8-1/4

Est. US$6,000-US$8,000

US$3,000(1 bid)

Tiffany & Co. 18K Yellow Gold Natural Diamond and Blue Sapphire Ring, Size 7: Tiffany & Co. 18K Yellow Gold Natural Diamond and Blue Sapphire Ring, Size 7, Consisting of Twenty (20) Round Brilliant-Cut Diamonds Weighing .55 Carats and Nineteen (19) Round Blue Sapphires Weighing

1 day Left

Tiffany & Co. 18K Yellow Gold Natural Diamond and Blue Sapphire Ring, Size 7

Northgate Gallery, Inc.

Est. US$6,000-US$9,000

10 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold: 10 Carat Emerald Cut - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold - 3.00 Ct Emerald Cut Lab Grown Diamonds Side Stones (VS1, F Color) – Excellent Luster – Ring Size US 7 - Free

Apr 05, 2026

10 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold

Est. US$30,000-US$35,000

14k BLUE TOPAZ AND DIAMOND RING SZ 8.5: Ladies blue topaz and diamond ring. The ring is stamped and tested to be 14kt yellow gold. There are 3 oval blue topaz set across the band and each one is surrounded by round brilliant cut diamonds. T

2 days Left

14k BLUE TOPAZ AND DIAMOND RING SZ 8.5

Charleston Estate Services Ltd.

Est. US$700-US$800

5.50ct Blue Sapphire, 0.85ctw Diamond and 18K Ring: 5.50ct Blue Sapphire, 0.85ctw Diamond and 18K White Gold Ring - This item will come with a $39,000 insurance valuation. A stunning ring centered by a captivating approximately 5.50 carat blue sapphire

1 day Left

5.50ct Blue Sapphire, 0.85ctw Diamond and 18K Ring

GWS Auctions Inc.

Est. US$38,000-US$39,000

Apr 10, 2026

Second-hand T900 Blue Paraiba Tourmaline Diamond Ring

Est. £90,000-£180,000

5.00ct Blue Sapphire, 0.75ctw Diamond and 18K Ring: 5.00ct Blue Sapphire, 0.75ctw Diamond and 18K White Gold Ring - This item will come with a $35,000 insurance valuation report. A striking and elegant ring centered by an approximately 5.00 carat blue

1 day Left

5.00ct Blue Sapphire, 0.75ctw Diamond and 18K Ring

GWS Auctions Inc.

Est. US$34,000-US$35,000

4.00 Carat Emerald Cut Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold: 4.00 Carat Emerald Cut Certified Lab Grown VS1 Blue Diamond Ring in 14KT Solid White Gold ) Total Carat Weight is - 5.40 Ct ( 1.40 Ct Emerald Cut Lab Grown Diamonds Side Stones (VS1, E Color) – Exce

Apr 05, 2026

4.00 Carat Emerald Cut Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold

Est. US$14,000-US$18,000

Platinum blue sapphire diamond ring GIA size 6.75: Platinum blue sapphire diamond ring, comes with GIA certificate. Total 3.43 carats sapphire, and 0.46 carats dimaond. Ring size 6.75.

6 days Left

Platinum blue sapphire diamond ring GIA size 6.75

West Coast Auction Gallery

Est. US$3,200-US$4,200

3.05ct Blue Sapphire, 0.40ctw Diamond and 18K Ring: 3.05ct Blue Sapphire, 0.40ctw Diamond and 18K White Gold Ring - This item will come with an $11,500 insurance valuation report. A captivating ring centered by an approximately 3.05 carat cushion cut b

1 day Left

3.05ct Blue Sapphire, 0.40ctw Diamond and 18K Ring

GWS Auctions Inc.

Est. US$10,500-US$11,500

2.5 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold: Emerald Cut - 2.5 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold ---- 0.50 Ct Round Cut Lab Grown Diamonds Side Stones (VS1, F Color) – Excellent Luster – Ring Size US 7 -

Apr 05, 2026

2.5 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold

Est. US$11,000-US$12,000

5 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold: 5 Carat Emerald Cut - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold - 1.40 Ct Round Cut & Fancy Cut Lab Grown Diamonds Side Stones (VS1, F Color) – Excellent Luster – Ring Size US

Apr 05, 2026

5 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold

Est. US$18,000-US$20,000

18k White Gold GIA 5.36ct Cushion Blue Sapphire Diamond Ring: 18k White Gold GIA 5.36ct Cushion Blue Sapphire Diamond Ring This stunning 18k white gold ring features a captivating 5.36 carat cushion-cut periwinkle blue sapphire, accompanied by two dazzling round

4 days Left

18k White Gold GIA 5.36ct Cushion Blue Sapphire Diamond Ring

Est. US$12,480-US$16,224

Pomellato Nudo Blue Topaz Diamond 18K Yellow Gold Ring: Elegant Pomellato Nudo ring crafted in solid 18K yellow gold, featuring a large cushion-cut blue topaz centerpiece accented by sparkling diamonds along the band. The minimalist open setting highlights

3 days Left

Pomellato Nudo Blue Topaz Diamond 18K Yellow Gold Ring

Victorins Auctions

Est. US$4,000-US$5,500

2.50 Marquise Cut Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold Engagement Ring: 2.50 Marquise Cut Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold Engagement Ring - Side Stone Lab Grown Diamonds 0.60 Ct Vs1 E Color - Excellent Luster – Ring Size US 6.5 - Free Resi

Apr 05, 2026

2.50 Marquise Cut Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold Engagement Ring

Est. US$12,000-US$15,000

5.35ct Blue Sapphire, 1.70ctw Diamond and 18K Ring: 5.35ct Blue Sapphire, 1.70ctw VS1-VS2/G-H Diamond and 18K White Gold Ring - This item will come with a $43,000 insurance valuation report. Centered by an approximately 5.35 carat oval-cut blue sapphir

1 day Left

5.35ct Blue Sapphire, 1.70ctw Diamond and 18K Ring

GWS Auctions Inc.

Est. US$42,000-US$43,000

14K Gold Ring w/ Blue Topaz, Diamond Accents: A 14k yellow gold ring with blue topaz rectangular central stone and 4 diamond accents. Ring size 9, total ring weight approx. 3.44.

2 days Left

14K Gold Ring w/ Blue Topaz, Diamond Accents

Keystone Auction LLC

Est. US$250-US$350

Certified 5 Carat Emerald Cut 14kt Solid White Gold Natural Blue Sapphire & Natural Diamond Ring: Certified 5 Carat Emerald Cut 14kt Solid White Gold Natural Heated Blue Sapphire & 0.40 Ct VS1 G Color Natural Diamond Ring - Ring Size US 6.5

Apr 05, 2026

Certified 5 Carat Emerald Cut 14kt Solid White Gold Natural Blue Sapphire & Natural Diamond Ring

Est. US$25,000-US$30,000

14k Yellow Gold Blue Enamel & Diamond Ring Sz 9: 14k yellow gold ring of floral form with blue enamel accents, set with central approximately 0.24 ct round brilliant cut diamond in an buttercup style, surrounded by six other smaller round brilliant

Apr 14, 2026

14k Yellow Gold Blue Enamel & Diamond Ring Sz 9

Revere Auctions

Est. US$800-US$1,000

2.00 CT Blue Diamond Ring: QJ8423/59-OOMS This stunning blue diamond halo ring embodies refined sophistication and radiant brilliance. At its center shines a vivid round-cut blue diamond, exhibiting mesmerizing ocean-blue tone

2 days Left

2.00 CT Blue Diamond Ring

Confiscated Assets Auctioneers

Est. US$2,500-US$3,000

3 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold: 3.00 Ct Certified Emerald Cut Lab Grown Blue Diamond Ring in 14KT Solid White Gold --- 0.45 Ct Round Cut Lab Grown Diamonds Side Stones (VS1, E Color) – Excellent Luster – Ring Size US 7.5 - Free

Apr 05, 2026

3 Carat - Certified Lab Grown Blue Diamond Ring in 14KT Solid White Gold

Est. US$12,000-US$15,000

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