How to select and evaluate jadeite – Part 2

How to select and evaluate jadeite – Part 2

Enhancement is an artificial way to improve the appearance of jadeite. Enhancement is able to advance the selling price of jadeite but not the real value. To unveil the secretes of enhancement can lock you on the real value of the jadeite. Due to the degree of treatment jadeite can be classified as following types: Type A (Allowing): No treatment is allowed except for surface waxing. The surface waxing is serving for the purpose to make the appearance more smooth and improve its higher reflecting capability. Allowing jadeite preserves the authentic quality to the most. Therefore you shall experience all the virtues of the nature of jadeite. Even under the daylight with your unaided eyes, you shall feel its fine texture, pure and soft color, and clear and...

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A Comparison between Jade and other Similar Precious Stones

There are many precious stones that are similar to jade but with quite different values. Sometime sellers might cheat you by selling these similar stones instead of real jade. The following is a comparison table: Name Hardness Density (g/cm3) Color Refractive Index Other Features Jadeite 6.5-7 3.34 Green, emerald green, white, red 1.66-1.68 Green color under Chelsea colour filter; absorption band in red and purple zone Nephrite 6-6.5 2.95 White, yellow, olivine, dark green, black, etc. 1.606-1.632,often 1.621 No response under Chelsea colour filter. Chalcedony 6.5-7 2.60 Green, light green, red, blue, milk white, etc. 1.535-1.539 Green color under Chelsea colour filter; absorption band in orange...

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