Jadeite and Omphacite are members of a large group of rock-forming minerals called pyroxenes, where Jadeite’s chemical formula is NaAlSi2O6, and Omphacite’s is (Ca,Na)(Mg,Fe2+,Al)Si2O6. Both minerals have different chemistry and/or structure. A matching colour pair of dark green oval cabochon [SAMPLE A] jade earring were submitted by customer. Spot reading Refractive Index of both stones show […]
Omphacite and Jadeite Jade Read More »
A green oval cabochon [Article 1] stone were submitted by customer as a “Type-A” Jadeite Jade. “Type-A” Jadeite Jade in trade is known as a jade with natural colour, and not undergone any treatment or modification through the impregnation with colourless or near colourless wax, resin, or any other agents. We performed a standard gemological testing, and
Jadeite jade’s color is the key important factor in evaluating its value. For decades, artist, sculptor, carver spend countless effort in study, planning, carve and re-carving their jade piece in order to bring out the best nature of their colour. However, with the current technology and trade demand, all the colour of a jadeite jade may
Residue of Polishing Powder? Read More »
