“Nature’s Fireworks” - A Beginner’s Guide to OPAL - Parts 6 and 7: Valuing Opals and Opal Dictionary
Saturday, May 31st, 2008Valuing Opals
When determining the value of an opal, several factors are involved:
Type of opal
Soundness
Base colour
Fire colour
Colour pattern
Brightness of fire
Background (base) Colour:
Solid precious opal is more valuable than a doublet or triplet, and black opal is more valuable than boulder opal, and so forth. The darker the body colour, the more valuable the gem.
Fire Colour:
The clarity […]