Generally opals with a black or dark body tone are more valuable than those with a white, light, or crystal body tone, because a stone with a darker body tone tends to display colours more vibrantly. Black opal is the most prized opal and may realise prices over AUD $15,000 a carat.
Everything you ever wanted to know about opal gems. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.
See many different types of opal, understand their names, learn about synthetics. And, since pictures are worth a thousand words, we share our favorite opal .
Find out the value of your opal at Australian Opal Cutters. We have extensive experience in cutting & valuing opals for 35 years. Contact us now to find out.
Opal is a true precious stone composed of amorphous silica and water. 85% of all opal found is called potch (opal without fiery colours) which has little value.