The desert rose is an evaporite. It is a gypsum aggregate. The way its constituent elements bond together is similar to the arrangement of a rose's petals.

Desert sand provides these building blocks (sand, gypsum, or hydrated calcium sulfate), and the desert rose—also known as a sand rose—forms through the evaporation of capillary water from the soil.

The desert rose is an evaporite. It is a gypsum aggregate. The way its constituent elements bond together is similar to the arrangement of a rose's petals.

Desert sand provides these building blocks (sand, gypsum, or hydrated calcium sulfate), and the desert rose—also known as a sand rose—forms through the evaporation of capillary water from the soil.

bague argent taille 56 monture style vintage fleur sertie d'une opale noire 6.8 x 4.9mm avec des feux bien délimités verts et bleus. L'opale vien d'Australie, la monture a été fabriquée au Royaume uni et sertissage par nos soins en France

Triplet d'opale AA+ multicolore en petit damier relativement régulier rouge, vert, bleu, jaune avec en plus un large feu qui varie du vert au rouge en passant par le jaune et le orange selon l'incidence de la lumière

Boulder opal with very intense green and orange flashes, very brilliant, semi-rough opal.