E' GIA' LUMINOSO ADESSO, CHISSA 'POI DAL VERO. GRAZIE E ALLA PROSSIMA
|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
HONDURAN ROUGH OPAL
This is natural untreated rough opal mined in Honduras. It is formed in areas of volcanic ash so the back has black ash as a base.Full faced stones are hard to come by with most of the material matrix.There is a natural fracture on the top of the stone.
Weight 7.10 cts app
Size 20x15x4 mm app
Honduras has hundreds of opal prospects and mines, although most high- quality opal is produced from small informal mines in the cool tropical highlands of southwestern Honduras. In particular, the Tablon mine near Erandique is based on the country’s biggest deposit where the opal occurs in large blocks of black basalt. Miners hand-chisel the boulders to extract small vertical veinlets of thin, colourful precious opal, including black-seam opals and black-matrix opals. Seam opals, varying from near paper-thin to rare specimens more than 1 cm thick, have a crystal clear, milky white, slightly blue or brownish orange colouration because they are so thin, the gems tend to be cut with the black basalt forming the back of the stone forming black-matrix opals.
|Starts||13th Aug 2012 11:01pm PDT|
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