Looking for genuine Crystals, Natural Tumblestones, Collectible Gemstones, Jewellery, Meteorites (Space rocks)? Look no further than My Lost Gems. Our extensive collection of nature’s hidden treasures is carefully selected for high quality and authenticity, and each item comes with a certificate of authentication. We offer a unique “buy what you see” shopping experience. With new products constantly being added, My Lost Gems is your go-to source for one-of-a-kind hidden gems. Shop now and discover the wonders of the earth.

FREE UK DELIVERY - Save up to 60%

Opal

Showing all 28 resultsSorted by latest

Showing all 28 resultsSorted by latest

Opal is a unique and beautiful mineral that belongs to the silica family of minerals. It is composed of tiny spheres of silica that are arranged in a three-dimensional lattice structure, which gives it its distinctive iridescent and colorful appearance. Opal is typically white or transparent, but can also be found in a range of colors including blue, green, pink, and yellow.

Opal is commonly found in sedimentary rocks, as well as in volcanic and hydrothermal deposits. It is a relatively soft mineral, with a Mohs hardness of 5.5-6.5, which makes it suitable for use in jewelry making and other decorative applications.