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Kashmir Sapphire, Diamond, Platinum Ring

DALLAS, TX.- An 8.99 carat Kashmir Sapphire, Diamond, Platinum Ring, AGL certified, Kashmir, No heat, is expected to bring more than $250,000 when it comes across the block as the highlight of a deep line-up of more than 1,000 lots in Heritage Auctions’ April 30 Fine Jewelry Auction. 

The auction will take place at the Fletcher-Sinclair Mansion (Ukrainian Institute of America), 2 East 79th Street (at 5th Ave.). 

“This ring is of significant importance,” said Jill Burgum, Director of Fine Jewelry at Heritage. “Kashmir is the rarest sapphire and the mine is all mined out. What makes this particular sapphire even more impressive is that the color is natural. There has been no color enhancement or treatment done. The sapphire is accompanied by an AGL certificate stating: ‘Kashmir, No Heat, and it’s spectacular.’”

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Kashmir Sapphire, Diamond, Platinum Ring. Photo Heritage Auctions

The ring features a cushion-shaped Kashmir sapphire measuring 13.66 x 12.41 x 6.27 mm and weighing 8.98 carats, enhanced by triangle-cut diamonds weighing a total of approximately 1.30 carats, set in platinum. An AGL report #CS 48650, dated March 9, 2012 stating Kashmir origin, No gemological evidence of heat, Clarity enhancement: None, accompanies the sapphire. Gross weight 7.50 grams. Size: 5 (sizeable). Estimate: $250,000 - $350,000

The Property of a Midwest Family Collection 

While it is rare enough to have even a single Kashmir Sapphire surface in a single auction, the 8.98 sapphire is complemented by another, smaller 4.86 carat Kashmir Sapphire, Diamond, White Gold Ring, No heat, which carries a pre-auction estimate of $60,000+. 

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Kashmir Sapphire, Diamond, White Gold Ring. Photo Heritage Auctions

The ring features a round-shaped sapphire measuring 8.95 - 9.01 x 7.22 mm and weighing 4.86 carats, enhanced by oval-shaped diamonds weighing a total of approximately 2.00 carats, set in 18k white gold. A Gübelin Laboratory report #1001604, dated January 25, 2010, statingNatural Corundum, Kashmir Origin, No Indications of Heating, accompanies the sapphire. Gross weight 5.70 grams. Size: 6-3/4 (sizeable)Estimate: $60,000 - $75,000.

Following the dazzling sapphire at the top of the auction a 4.26 carat Diamond, Platinum Ring (GIA F/IF) is expected to capture the fancy of collectors given the clarity of the diamond. It carries a pre-auction estimate of $100,000+. 

This diamond is graded by GIA as F color, Internally Flawless,” said Burgum, “just about as good as it gets, especially at 4.26 carats.” 

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Diamond, Platinum Ring. Photo Heritage Auctions

The ring features a marquise-cut diamond measuring 16.21 x 8.90 x 5.22 mm and weighing 4.26 carats, enhanced by triangle-cut diamonds weighing a total of approximately 0.90 carat, set in platinum. Total diamond weight is approximately 5.16 carats. A GIA Laboratory report # 2145519355, dated March 13, 2012, stating F color, Internally Flawless clarity, accompanies the center diamond. Gross weight 7.10 grams. Size: 5 (sizeable). Estimate: $100,000 - $150,000

The Property of a Midwest Family Collection 

A 9.95 carat Columbian Emerald, Diamond, Platinum Ring (estimate: $100,000+) presents collectors with a magnificent example of a classic Columbian emerald, graded by AGL while a 9.81 carat Ruby, Diamond, Platinum Ring is expected to bring $150,000+ and a Fancy Light Yellow Diamond, Diamond, Gold Ring is generating some buzz with a $140,000+ pre-auction estimate. 

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Colombian Emerald, Diamond, Platinum RingPhoto Heritage Auctions

The ring features an emerald-cut emerald measuring 12.68 x 11.44 x 9.55 mm and weighing 9.95 carats, enhanced by marquise-shaped diamonds weighing a total of approximately 0.80 carat, accented by pear-shaped diamonds weighing a total of approximately 0.75 carat, set in platinum. An AGL report #CS 48651, dated March 9, 2012 stating Classic Colombian origin, Insignificant to Faint Clarity Enhancement,accompanies the emerald. Gross weight 12.80 grams. Size: 5-3/4 (sizeable). Estimate: $100,000 - $150,000

The Property of a Midwest Family Collection 

Further highlights include, but are not limited to: 

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Diamond, White Gold RingPhoto Heritage Auctions

The ring features a cushion-cut diamond measuring 12.15 x 9.34 x 6.22 mm and weighing 5.87 carats, enhanced by tapered baguette and full-cut diamonds weighing a total of 1.98 carats, set in 18k white gold. Total diamond weight is approximately 7.85 carats. A GIA Laboratory report # 17474418, dated July 31, 2008, stating K color, VS1 clarity, accompanies the center diamond. Gross weight 13.50 grams.  Size: 6-1/2 (sizeable). Estimate: $80,000 - $100,000.

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Fancy Intense Yellow Diamond, Diamond, Platinum, Gold RingPhoto Heritage Auctions

The ring features a radiant-cut yellow diamond measuring 11.50 x 9.60 x 6.77 mm and weighing 7.04 carats, set in 18k gold, enhanced by full-cut diamonds weighing a total of 0.92 carat, set in platinum. Total diamond weight is 7.96 carats. An EGL Laboratory report #US 904845602D dated February 17, 2012 stating Natural, Fancy Intense Yellow Color, accompanies the center diamond. Gross weight 9.70 grams. Size: 5-1/2 (sizeable). Estimate: $80,000 - $100,000.

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Diamond, Platinum RingPhoto Heritage Auctions

The ring features a pear-shaped diamond measuring 11.59 x 8.43 x 5.06 mm and weighing 3.03 carats, enhanced by baguette-cut diamonds weighing a total of approximately 1.10 carat, set in platinum. Total diamond weight is approximately 4.13 carats. A GIA Laboratory report #2131842089, dated December 28, 2011, stating G color, VVS1 clarity, accompanies the main diamond. Gross weight 10.60 grams. Size: 4 (sizeable) Estimate: $60,000 - $80,000.

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Colored Diamond, Gold RingPhoto Heritage Auctions

The ring features a square-mixed-brilliant-cut yellow diamond measuring 11.50 x 11.35 x 5.60 mm and weighing approximately 6.05 carats, enhanced by full-cut yellow diamonds weighing a total of approximately 1.65 carats, set in 18k gold (colored diamonds not tested for origin of color). Total diamond weight is approximately 7.70 carats. Gross weight 16.10 grams. Size: 4-1/2 (sizeable) Estimate: $60,000 - $75,000.