1.91 ct LYSO
LYSO (Lutetium Yttrium Oxyorthosilicate) is a unique material originally designed for detecting gamma rays in scientific applications. Colorless in normal lighting, it has a intense blue fluorescence under UV ("black") light. A very cool and stunning effect! Relatively soft at 5.8 on the Mohs scale so it would be best set in a pendant.
Dimensions: 6.1 - 6.1 x 4.0 mm
Origin: Lab-created (Czochralski pulled)
ID Report: None
Design: "Itasca" round brilliant hearts and arrows
Precision cut by: Gary Braun