Rainbow Round Coin - 4mm - Gilson Opals

These 1mm thick coin opals are flat & polished on both sides and rounded & polished along the edges. The stones are have a transparent base color. When encased the edges of the opals can disappear leaving only the fire floating in the glass - a very neat effect. Each stone flashes a rainbow of intense fire. You are going to love these opals!

Sold by the piece.