Unheated opals maintain their original, natural properties. They are formed from silica and water, often found in rock fissures, such precious opal is very rare – far more rare than diamonds, because the natural processes that create it rarely occur. Gemstone Type: Natural Opal Species: Natural Grey Opal Dimensions: 17.91 x 15.50 x 9.03 mm Clarity: Transparent ( Internally Flawless ) Colour: Play Of Multi Colors Shape: Pear - Cabochon Treatments: No indication of treatment Certified: ICA TH25G115132 Import Customs Tax The Buyer Is Fully Responsible For Any Import Customs Duties And Taxes In Their Country. We Do Not Have Any Control Over These Duties, Taxes &, Etc. Import duties, taxes, and VAT are not included in the item price. Return Policy After Receiving The Item - "Contact Seller Within - 7 Days" Shipment We ship via Expedited Shipping DHL Express - FedEx from Bangkok, Thailand