Tags: Earring Pair Blue Opal
Blue Opal is a mineral crystal rock that is contained of silicon dioxide by strengthening sedimentation of volcanic material. This type of stone, including types of precious stones with light blue to dark blue, even some there which looks purplish. From geomological sources, Blue Opal has a level of violence ranging from4.5 to 6.7 on the Mohs scale, with specific gravity ranging from 1.96-2.17 gram / cm³, refractive index ranging from 1.44-146, so this stone has the nature of cracking and the color to be fade when exposed to direct sunlight, or the temperature is too hot. Blue Opal Stone some have transparent crystallization levels, and some are Opaque, or nottranslucent. Since the 1990s, Blue Opal stones have been found in the Sukabumi area, and since mid-2014 in the area of Cibeber Girang village, Cicurug Sukabumi this stone was found the discovering team from Stone Art Indonesia. After the discovery of this stone, many reap the response positive from Garut residents because this stone is in great demand by Indonesian stone lovers. Finally, the search location was expanded to several points in Sukabumi.