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sterling silver earrings wholesale china How to choose topaz?

Опубликовано в от Король

Some pink topaz is formed by heating light yellow topaz. This kind of heat treatment has a history of centuries. The pink topaz inlaid on some antique jewelry from the Middle Ages is heat treated. Because the color of this treatment is stable and long-lasting, it is recognized in the industry to be acceptable, regardless of whether the pink is natural or the result of heating.

Many blue topazes currently on the market are treated with radiation, which turns the colorless topaz into a beautiful sky blue after being irradiated. As long as there is no excess radiation residue, this treatment is also allowed by the industry Processing method.

Topaz has different facet cuts, ellipse, rectangle, and pear shape are common. As long as it can show beautiful color and luster, it is a good cut.

Аквамарин, Морганит, citrine, pink tourmaline, yellow tourmaline, pink corundum and other gems and topaz are similar in color and appearance, making it difficult to distinguish for a while. The fastest way to distinguish is to throw the gem into it by specific gravity. In diiodomethane specific gravity liquid with a specific gravity of 3.32, the specific gravity of tourmaline, beryl and crystal gemstones is lower than that of diiodomethane, so they will float, while corundum and topaz that will sink can be measured by measuring the refractive index. Distinguish it.

It is better to choose topaz with uniform color and higher concentration. The price of too light color is relatively low. Конечно, personal preference is the most important. Кроме того, the crystals of topaz are usually very large, so topaz with a large carat number is very common.

Pascal will fade due to high heat, so try to avoid wearing topaz for cooking or close to high temperature places, and be especially careful of the high temperature during welding when inlaid.

 

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