Please read the description and measurement of the items. Sometime the images could make the object looks a lot bigger than the actual size. You won't find two exactly identical opal gems because of their unrepeatable play-of-color.Please protect your precious opal from heat and detergents that "dry" the gem. Being worn frequently can help opal to acquire the necessary humidity from the air as well as from the skin. The item "Australian Koroit Boulder Opal Gorgeous Blue & Green Unique Pattern Gem" is in sale since Tuesday, February 7, 2017. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Boulder Opals". The seller is "thewindopal" and is located in Smyrna, Georgia. This item can be shipped worldwide.