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Description

Kashmir Sapphire, Diamond, Platinum Ring
Stones: Octagonal-shaped sapphire weighing 6.59 carats; trapezoid-shaped diamonds weighing a total of approximately 1.00 carat
Metal: Platinum
Gross Weight: 5.40 grams
Size: 6-1/2 (sizeable)

GIA Report # 2235825361, dated January 13, 2026, stating Natural Corundum, Sapphire, Kashmir Origin, No Indications of Heating

AGL Report #


Estimate: $300,000 - $600,000.

Condition Report*: Diamonds:
Avg Color: G-H-I
Avg Clarity: VS
Shape(s): Trapezoid
Count: 1 - 25

Colored Gems:

Certified Gems:
Gem: 1
Lab: GIA
Certification #: 2235825361
Carat: 6.59
Shape: Octagonal
Origin: Kashmir
Treatment: No Indications of Heating
Type: Sapphire

Metals:
Platinum

Overall Condition: Very Good
Condition Notes: Emerging from the perilous Himalayan heights of Kashmir’s Zanskar range, these sapphires were uncovered among high mountain scree and steep slopes rising beyond 15,000 feet in elevation. At such formidable, oxygen depleted altitudes, safe passage is largely confined to deeply experienced local guides. Their renown rests as much on the severity of this unforgiving terrain as on the unmistakable cornflower blue and velvety bloom that distinguish the finest stones.

This Kashmiri example embodies royal blue in its purest expression, with GIA issuing a specific comment recognizing the stone’s notable color. Overall condition is fine. Slight looseness at the center is observed due to reduced prong contact and would benefit from tightening. Trapezoid side diamonds are clean in clarity and are estimated to weigh approximately 0.50 carat each. Sizing beads are installed within the shank; the stated ring size is approximate, based on an inner diameter of 17.00 mm. A serial style number, 1546, is present internally and represents the only visible marking; the alloy has been verified as platinum via XRF analysis.
*Heritage Auctions strongly encourages in-person inspection of items by the bidder. Statements by Heritage regarding the condition of objects are for guidance only and should not be relied upon as statements of fact, and do not constitute a representation, warranty, or assumption of liability by Heritage. All lots offered are sold "AS IS".

Auction Info

Bidding Begins Approx.
March
24th Tuesday
Auction Dates
May
4th Monday
Proxy Bidding Begins Approx. 
27 Days
Bids + Registered Phone Bidders: N/A
Lot Tracking Activity: N/A
Page Views: 46
Auction Type
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Signature® Floor Sessions
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