Lab-Grown Star Sapphire Oval Cabochon

This lab-grown star sapphire cabochon is made with corundum and offers an intense blue color. Each stone has a chemical make-up identical to those found in nature. It performs at the bench just as a natural stone would. Unlike natural sapphires, however, this stone is heat-resistant and can be successfully cast in place. For a variety of designs, this stone is a popular, affordable and reliable choice in place of natural sapphire. Sapphire is the birthstone for September.

---

Gemstone type: Sapphire
Stone shape: Oval
Stone size: 7 x 5mm, 8 x 6mm, 10 x 8mm
Stone type: Lab grown
Color: Blue
Birthstone: September
Enhancement: Synthetic (SYN)
Mohs hardness: 9
Refractive index: 1.76–1.77
Specific gravity: 3.99–4
Cutting center: China