Green Opal is a common Opal and is formed from a solution of silicon dioxide and water. As water runs down carries this silica-rich solution into cracks and voids. through the earth, it picks up silica from sandstone, and as the water evaporates, it leaves behind a silica deposit. Said to attract money and prosperity. Approximate weights: Medium – 501g-750g, Large 751g-1000g, Exact size may vary as they are graded on weight. All products are unique and may not look like those in the photos.
