Otto Frei

This Round Rose Cut Lab-Created Blue Sapphire is composed of man-made corundum sharing the same chemical composition and physical durability as nat...

Sapphire is one of the most popular colored stones in the United States, prized for its extraordinary durability and suitability for everyday wear....

A clean, bright white cabochon for setting work, design prototyping, or finished jewelry. These round lab-created white sapphire cabochons offer a ...