Violet Sapphire · Facet Rough · 3.1 ct · Untreated

This natural violet sapphire offers an excellent opportunity for gem cutters seeking untreated facet-grade rough with an attractive natural crystal shape. Originating from Tanzania, the crystal displays a transparent body with a delicate violet color that can develop into a striking finished gemstone through careful planning and precision cutting.

With an estimated 80% facetable volume, this rough provides substantial material for shaping while maintaining good flexibility during the cutting process. The crystal is slightly included, a characteristic commonly found in natural sapphires that reflects its natural origin rather than diminishing its appeal. An experienced faceter can orient the rough to achieve the best possible balance between clarity, color, and finished size.

Its proportions make the crystal suitable for several cutting styles, depending on the cutter’s priorities. Oval, cushion, or modified brilliant designs could all take advantage of the available material while showcasing the sapphire’s transparent violet color.

Untreated sapphires remain highly appreciated by collectors and gem cutters alike, preserving the gemstone exactly as it formed in nature. Whether intended for a custom jewelry project or added to a collection of fine rough gemstones, this Tanzanian sapphire represents an appealing combination of natural beauty and cutting potential.

Specifications

• Stone type: Natural Sapphire
• Origin: Tanzania
• Weight: 3.17 ct
• Dimensions: 9.8 × 6.3 × 5.9 mm
• Treatment: Untreated
• Clarity: Slightly Included
• Color: Violet
• Transparency: Transparent
• Rough Type: Crystal
• Facet Potential: Facet Grade
• Facetable Volume: ~80%
• Estimated Yield: ~30%