Black Tourmaline 7x8mm Faceted Swirl Oval - 15-16 Inch featured_10312024 Beautiful specimens of Precious Opal

Beautiful specimens of Precious Opal

bubbles and crystal-rich layers that form as lava flows onto the surface of stone —

a banded Chalcedony that is predominantly white with layers of brown

There are 2 specimens pictured to show that there are variations in the size and color

Black Tourmaline 7x8mm Faceted Swirl Oval - 15-16 Inch featured_10312024 Beautiful specimens of Precious OpalBlack Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to dark. It can even exhibit various colors within the same specimen. Its name derives from the Sinhalese word turamali, which translates to stone of many colors. Due to