Stunning 20.87ct unheated Star Sapphire

This sapphire features a mirror luster with a strong floating star pattern that follows the gems movement. It has a shimmering black and gold hue with full saturation, and an opaque body that amplifies this natural effect. It measures 15.6mm x 14mm x 8.7mm, and has a Mohs hardness rating of 9 out of 10, making it perfect for jewelry. Sourced from Bang Kacha, Thailand.