LuAG (Lutetium Aluminum Garnet), also known as Lumogarnet. Lab-grown material with intense neon yellow color and high density. Composed of lutetium aluminum oxide, it is among the most UV-reactive of the synthetic garnets, showing INTENSE fluorescence under ultraviolet light. Valued for its brilliance and durability in both optical and faceting

4.21 g / 21.05 carats / 10.0 x 9.6 x 7.2 mm 

*The gemstone was cut from this material