1.) approx. size : 19 ~ 20mm (length) x 13 ~ 15mm (width) x 8 ~ 9mm (thick) 2.) quantity: 3 beads 3.) approx. total weight : 8 grams = 40 carats 4.) This listing is for the exact stone shown in the photo. 5.) Color of gemstone may vary slightly from screen to screen.
Note: The opals feel smooth to the touch. Sharp contrast between black and white is always so eye-catching. The shape is lovely. A unique addition from exotic Madagascar to your jewelry making !
~~~This opal variety is termed "dendritic" due to the black dendrite inclusions. Dendrites are fern-like inclusions of iron, manganese, or other metallic oxides that create bold patterns within the gem. Usually these opals are white, yellow, blue, green or pink and show the black inclusions Opal is hydrated silicon dioxide and its hardness is 5-6.5. Dendritic Opal is sometimes reffered by the metaphysical name of Merlinite, a crystal which is very similar in chemical composition and appearance.