13.10ct Welo Ethiopian Opal / Raw Gemstone / for Gemstone & Mineral Collectors/ Jewelry Crafting / Crystal Healing/ Reiki/ Meditation high_quality_grade Quite a number of rainbows

Quite a number of rainbows throughout this cluster as well

It is large and comprised of almost entirely quartz

Mexico is rich in Calcite

A beautiful formation of golden yellow fluorite from Spain

Arsenic oxide is widely used in medicine and pharmacy

13.10ct Welo Ethiopian Opal / Raw Gemstone / for Gemstone & Mineral Collectors/ Jewelry Crafting / Crystal Healing/ Reiki/ Meditation high_quality_grade Quite a number of rainbowsYou will receive the weight selected! Country of Origin : Welo, Ethiopia Weight : 2. 62g 0. 092oz 13. 10ct Measurements : 5 8" x 3 4" x 1 2" 1. 5 x 1. 8 x 1. 2 cm This piece comes with a Small Perky Plastic Box with a labeled backside. Beautiful natural pieces of Ethiopian opal. Ethiopian opal is much more durable than Australian opals by virtue of being more resistant to drying out. In any case, care should be taken to not submerge them in water for