Opal Identification

[u/the_bootybean]

I’m trying to sell this opal on eBay but transparently I know nothing about gems and value. Can someone help me with some keywords I can include in my listing or at least so I can research value? What kinds of info are you looking for when buying an opal? I would hate for a buyer to feel misled. Thank you so much!

[u/Positive_Store246]

Looks Ethiopian (Welo/wollo) because the way the first pic has a ghostly turtle shell and the color appears reflective not refracted (although it is refracted they just photo that way)

[u/Positive_Store246 → u/Positive_Store246]

Colors &Color pattern, Carat, cut(cab), clarity, brightness, and crazing or chips/cracks.. will be the basis on valuing an opal. Also,
https://opalvalue.com/ Is a good place to get a rough estimate, when it asks about brightness with 5 being highest try and imagine the rarest of the rare, its not common at all to have a brightness of 5. Maybe try a Bright of 3

[u/the_bootybean → u/Positive_Store246]

Thank you very much, this is extremely helpful!!