Opal

---

Fire opal in a matrix slab of alunite from Guatemala Opals are not truely crystalline and are therefore mineraloids They comprise of hydrated silica glass

---

Size: 3884px × 4975px
Photo credit: © Natural History Museum, London / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: abstract, alunite, fire, glass, guatemala, hydrated, matrix, mineraloid, opal, opalescence, orange, silica, slab