1.21 ct Natural Heated Blue Sapphire – Trillion (Trilliant) Cut

A natural 1.21 carat blue sapphire in a trillion (trilliant) cut, heat treated. Trillion-cut blue sapphire is one of the less common format combinations in the market — most blue sapphires are cut oval or cushion for weight efficiency, so a true trillion represents a deliberate shape choice. The three-sided geometric outline of the trillion produces a face-up footprint significantly larger than the carat weight suggests, and the equal-sided triangular form has a bold, architectural character that stands apart from conventional engagement ring shapes.

Good to Know

A few practical points to weigh before purchasing this specific stone:

• View the stone in daylight and under warm indoor light — dark saturated blues can read almost inky under low light, so confirm the tone works in the lighting where you'll wear it most.
• At 7.05 x 6.30mm with three pointed corners, this stone requires a setting with V-prong or protected corner tips — standard for trillion cuts but worth confirming with your jeweler before mounting.
• When comparison-shopping, confirm heat treatment disclosure and lab source in writing, and ask whether any comparable stone offered is a true trillion or a modified triangular cut.
• Weigh the scarcity noted above, since a true trillion-cut center stone in a dark, saturated blue is harder to source than an oval or cushion of the same color and weight.
• Ask for a personal video if you would like to see the stone in motion before finalizing the purchase.

Learn More About This Gemstone

• Blue Sapphire Buyer's Guide
• Unheated Sapphire Guide
• GIA Guide
• Custom Ring Guide
• Sapphire Buying Guide
• How to Care for a Sapphire Engagement Ring