as well as some occurrences of dark gray
Australian Opal Beads are some of the most beautiful and interesting gemstones on Earth
Azurite in crystal form is extremely rare and expensive
The shell is often found naturally polished with a green or brown spiral on one side and a white "eye" on the other
but takes a trained eye and a microscope to discern the difference between this material and the Jade it is named after
Eudialyte 8mm Round - 15-16 Inch 13x40mm as well as some occurrencesEudialyte is a complex silicate mineral that most commonly forms in granular patterns. It is usually found within coarse grained rocks and contains calcium, cerium, sodium, iron, manganese, zirconium, and yttrium. This stone ranges in color from pink and red to brown, violet, and even green; sometimes with inclusions of Black Tourmaline. It was first discovered in Greenland by F. Stromeyer in 1819 and was named after the Greek words eu dialytos