ahmed11 wrote:Informative and helpful thread
that's unusual for this place

Moderator: johnsmith
ahmed11 wrote:Informative and helpful thread
pinkeye wrote:umm yeah well anyone know about opals?
HBS Guy wrote:Wish Lefty would log on again. He would know. Opals are cut as cabochons, no facetted.
Opal is a form of silicate so not overly hard, unlike sapphires.
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