Because boulder opal forms in thin veins in ironstone boulders, the host ironstone is usually left on the back of the stone. This is why, if you look at the back of a boulder opal, there is a layer of brown rock attached to the back. For this reason, boulder opal is sometimes referred to as a'natural doublet', as this layer of dark stone on the back gives the opal its dark body tone. Trust in a certified GIA, NGC, PCGS & ANACS dealer. Product Notes: USE THE PHOTOGRAPH TO JUDGE THE CONDITION AS THIS IS THE ITEM YOU WILL BE RECEIVING.
WE ALWAYS REPRESENT FIRST QUALITY PRODUCTS AT THE BEST PRICES. Check out my other items! The item "Custom 18K Yellow Gold & 925 Sterling Silver Australian Black Boulder Opal Ring" is in sale since Thursday, April 20, 2017.This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone". The seller is "kingdavidstreasures" and is located in Largo, Florida. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Singapore, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Bahamas, China, Switzerland, Uruguay.