This beautiful item features Dichroic Glass which was a process developed by NASA in the 1950's to reflect radar. The glass was first discovered in its natural form by the Romans in the 4th century. Today, thin layers of oxides are vacuum deposited on the glass, altering the refraction index in the visual spectrum. The glass is layered and fused in several stages at a carefully monitored temperature which is critical to give the piece it's unique fiery iridescence. Each is then crafted into a one-on-a-kind keepsake. I fire the kiln at 1700 degrees.