This natural Greyish White Howlite originates from United States and its weight is about 2.5 carats. The measurements are 9.89mm x 7.9mm x 3.9mm (length x width x depth).This gemstone is calibrated to fit 10 X 8 mm jewelry settings. The shape/cut-style of this Howlite is Oval Cabochon. This 2.63ct Howlite gem is available to order and can be shipped anywhere in the world. Gemstone Certification can also be provided as an optional service.
By chemical composition, howlite is a calcium borosilicate hydroxide. It was first discovered at Tick Canyon in southern California in 1868. It was named after Henry How (1828-1879), a Canadian mineralogist who first described it.
Howlite is typically white or grayish white with fine grey or black or brown veins, often in a web-like pattern. It is opaque with a sub-vitreous luster sometimes described as porcelaneous. It is usually found in borax deposits in the desert clays of California.