High Grade Sparkling Australian Chunky Boulder Opal Pendant on Adjustable Cotton Cord Nuummite n n9-ounce

n n9-ounce

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It is a somewhat rare mineral sought by collectors as it typically forms euhedral isometric crystals

High Grade Sparkling Australian Chunky Boulder Opal Pendant on Adjustable Cotton Cord Nuummite n n9-ounceBoulder opal is found embedded in large boulders of ironstone, which is how it earned its name. Occurring as pebble rock, precious opal develops within thin veins, fissures and hollows. As opal miners attempt to remove the embedded opal from the ironstone, some of the host matrix is preserved during the process. For this reason, boulder opal is sometimes referred to as Opal in matrix. The ironstone matrix enhances the stones durability and vibrancy of