There are very few jewellers that know the value of any stone. They are merchants. Go to a good G.I.A. certified appraiser for the value of a gemstone. Opals can range in price from several dollars a...
Whole real opals are rare in more modern jewelry, unless bought from a reputable jeweler who guarantees its authenticity. Makers use opal chips or dust and a clear coating to meld those together in...
Take it to a local jeweler or pawn shop and ask the jeweler or pawn broker to verify that the stone is either a diamond or not a diamond. S/he will use a probe to make this determination.
