Ruby · Facet Rough · 331 ct · Synthetic · Ruby Red

This premium Flame Fusion synthetic ruby from Thai Tech Sapphire offers exceptional color, clarity, and cutting potential in an impressive large-format crystal. Its vivid ruby-red color, excellent transparency, and elongated shape make it an outstanding choice for precision faceters looking to produce multiple high-quality gemstones from a single piece of rough.

Weighing 331.50 carats (66.3 grams), this crystal provides abundant material for a wide variety of faceting projects. With an estimated 99% facetable volume, virtually the entire crystal can be utilized, allowing excellent material efficiency and outstanding flexibility when planning individual gemstone designs. Its elongated boule shape is particularly well suited for oval, emerald, radiant, elongated cushion, and custom precision cuts.

Manufactured using the Flame Fusion process, the material is eye clean and highly homogeneous, providing predictable cutting characteristics and consistent optical performance throughout the crystal. Once faceted, the rich ruby-red color combines with the high refractive index of corundum to produce crisp reflections, outstanding brilliance, and excellent light return. The first image, photographed with strong transmitted light, demonstrates the vibrant color that can be achieved in the finished gemstones after faceting and polishing.

With a hardness of 9 on the Mohs scale, synthetic corundum is one of the most durable materials available for gemstone cutting. It is equally suitable for professional gem cutters producing fine jewelry, enthusiasts refining their faceting skills, or anyone seeking premium synthetic rough for custom projects.

Whether used to create a single impressive centerpiece or numerous precision-cut rubies, this crystal offers outstanding value through its exceptional size, vibrant color, and excellent cutting characteristics.

Specifications

• Stone Type: Synthetic Corundum
• Growth Method: Flame Fusion
• Manufacturer: Thai Tech Sapphire
• Weight: 66.3 g / 331.5 ct
• Dimensions: 98.3 × 22.0 × 10.9 mm
• Clarity: Eye Clean
• Color: Ruby Red
• Transparency: Transparent Rough
• Type: Crystal
• Facet Potential: Facet Grade
• Facetable Volume: ~99%
• Estimated Yield: ~40%