Stunning Opal Necklace

Opal, oxidized sterling silver. 

Radiant in color, this stone has so much going on. The colors range from iridescent purple to cloudy blue with the brown matrix popping through. What I find unusual is the opaque golden yellow. 

Necklace is adjustable from 18" to 20" and the stone 1-1/2" long and about 1-1/4" across.