WHAT IS CRYSTAL OPAL
This beautiful variety embraces color ranges from light to black opal from extremely translucent to transparent. If you can see through the opal when you hold it up to the light it is referred to as crystal opal and are among the most beautiful of the light opal.
Fine Lightning Ridge crystal opal is exceedingly beautiful and rare and can command very high prices. Crystal refers to the transparency of the opal not the structure.
The word “crystal” is used to describe its translucency but is a misnomer as opals do not possess a true crystal structure.