Thai Ruby Diamond Ring Pt900 K18

Updated August 25, 2026

This auction ended on September 5, 2026. See upcoming auctions from Michael Thomas Trading Company or current jewelry & watches auctions.

Lot number	1155
Category	Jewelry & Watches
Auction	Designer Jewelry, Silver, Gold, Diamonds #063
Date	September 5, 2026 at 9:00 AM PDT
Auction house	Michael Thomas Trading Company
Location	Long Beach, California

Thai Ruby and diamond ring in Pt900 Platinum and K18 (Yellow Gold). Silver / gold / red / clear color. Size 14.5. Motif 5 x 7mm; weight 12.8g. Includes identification book. This item was verified and authenticated by an independent third-party professional before being listed for sale. Not all items include authentication certificates, receipts, or other supporting documentation. Please carefully review the listing photographs and description to confirm whether any additional paperwork is included. If documentation is not shown in the photographs or specifically mentioned in the description, it is not included with the item. For additional protection and peace of mind, buyers may request Entrupy authentication for an additional fee of $49. Entrupy will independently examine the item and provide its authentication documentation and applicable guarantee. Please review the auction Terms and Conditions for important information regarding bidding, winning bids, payment, and shipping.

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