Sapphire · Facet Rough · 206 ct · Synthetic · Medium Blue

This premium Flame Fusion synthetic blue sapphire from Thai Tech Sapphire combines vivid color, exceptional clarity, and outstanding cutting potential in a large, high-quality crystal. Its beautiful medium blue color and excellent transparency make it an ideal choice for precision faceting, whether for custom jewelry or for producing multiple finished gemstones from a single piece of rough.

Weighing 206.00 carats (41.2 grams), this crystal offers abundant material for a wide variety of faceting projects. With an estimated 99% facetable volume, virtually the entire crystal can be utilized, maximizing material efficiency while providing complete flexibility in selecting the final gemstone designs. The elongated boule shape is particularly well suited for emerald cuts, oval cuts, radiant cuts, elongated cushions, and other precision faceting styles.

Produced using the Flame Fusion growth method, the material is eye clean and highly homogeneous throughout the crystal. Corundum’s high refractive index allows a precision-cut gemstone to display crisp facet reflections, excellent brilliance, and outstanding light performance. While the rough appears relatively dark under normal lighting, strong transmitted light reveals the vibrant medium-blue color that will become far more apparent once the material has been carefully faceted and polished.

Synthetic corundum offers the same outstanding hardness of 9 on the Mohs scale as natural sapphire, making it exceptionally resistant to scratches and perfectly suited for everyday jewelry. Its consistent color, predictable cutting characteristics, and excellent optical quality have made Flame Fusion sapphire one of the most popular materials for both experienced faceters and those refining their precision-cutting techniques.

Whether you plan to create a collection of beautifully faceted blue sapphires or a single impressive centerpiece, this crystal offers exceptional value through its generous size, remarkable clarity, and excellent faceting potential.

Specifications

• Stone Type: Synthetic Corundum
• Growth Method: Flame Fusion
• Manufacturer: Thai Tech Sapphire
• Weight: 41.2 g / 206 ct
• Dimensions: 69.1 × 20.0 × 10.8 mm
• Clarity: Eye Clean
• Color: Medium Blue
• Transparency: Transparent Rough
• Type: Crystal
• Facet Potential: Facet Grade
• Facetable Volume: ~99%
• Estimated Yield: ~40%