Amethyst · Facet Rough · 37.8 ct · Untreated · Violet

This impressive natural amethyst crystal from Bahia, Brazil showcases a rich violet color, excellent transparency, and a beautifully developed crystal form. Selected as facet-grade rough, it offers exceptional potential for creating a large precision-cut gemstone while preserving the natural beauty that makes Brazilian amethyst so highly regarded.

Weighing an impressive 37.84 carats, this crystal provides abundant material for a wide range of faceting designs. With an estimated 99% facetable volume, nearly the entire crystal can be incorporated into the finished gemstone, allowing excellent weight retention and maximum flexibility during the cutting process. Its elongated proportions are well suited to elegant cuts such as oval, emerald, cushion, or other custom precision designs that emphasize both brilliance and color.

The crystal is eye clean and highly transparent, allowing light to move freely through the material and reveal its vibrant violet hue. As an unheated amethyst, its color is entirely natural, preserved exactly as it formed within the earth over millions of years. Bahia has earned a worldwide reputation for producing fine amethyst crystals with excellent clarity and vivid color, making material from this region a favorite among gem cutters and collectors alike.

With an estimated 40% yield, this rough crystal offers the opportunity to produce a substantial finished gemstone suitable for a statement ring, elegant pendant, or a distinguished addition to a fine gemstone collection. Combining generous size, natural color, and outstanding cutting potential, it is an excellent choice for anyone seeking premium amethyst rough.

Specifications

• Stone type: Natural Amethyst
• Origin: Bahia, Brazil
• Weight: 37.84 ct
• Dimensions: 25.8 × 15.0 × 14.4 mm
• Treatment: Unheated
• Clarity: Eye Clean
• Color: Violet
• Transparency: Transparent
• Rough Type: Crystal
• Facet Potential: Facet Grade
• Facetable Volume: ~99%
• Estimated Yield: ~40%