Arnold Cheong

Natural vs Synthetic Diamonds

Diamonds have long been admired for their beauty, rarity, and strength. But not all diamonds are formed the same way. While natural diamonds were created deep within the Earth billions of years ago, synthetic diamonds are made by humans using advanced technology. Natural Diamonds Natural diamonds are formed under extreme heat and pressure about 150–200 km deep beneath the Earth’s surface, in the […]

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Omphacite and Jadeite Jade

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

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"B+C-Jade"

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

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“Energy” Stone

A weighted 119.051 cts uneven shaped rough stone with iridescent on its flat surfaces submitted as rare stone by a customer. Customer told that this stone is from meteorite and come with strong “Cosmic energy”. Random 2 spot were tested on [Specimen 1] with Raman spectroscopy, and result of the Raman spectrum matched closely with

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