This is a beautiful Dichroic Glass Pendant by Dolores Barrett is from her Atomic Orb Series of jewelry. This series was inspired by the Pantheon in Rome. Light enters through the oculus and interacts with the dichroic lining below. Dichroic glass has metallic oxides such as titanium, silicone, and magnesium deposited on the surface of the glass in a high temperature vacuum furnace. The glass is then fused into molds and hand finished for a satin smooth finish. This pendant measures approximately 1-3/4" in diameter x 5/8"deep and it comes with an 8" silver chain.