Because of its poor toughness and external force, Topaz is prone to cracks, so it is not suitable to make a male ring, but the texture of topaz is quite hard and the hardness is 8 degrees. The proportion of topaz is higher, almost the same as the proportion of diamonds. Just the refractive index is much lower than the diamond. Topaz usually has some cracks, but as long as the cockroaches cannot be found by the naked eye, such topaz can be regarded as the top grade.
The beauty of topaz is its extraordinary beauty. The precious topaz, the color should be very bright yellow, the micro with a little orange, the whole is gold, called golden topaz or emerald topaz. The reddish-yellow, yellow-brown Sydney topaz and the extremely light pale blue topaz are more precious gems, and there are pink to red topaz and colorless topaz. The red topaz is usually heated by brownish yellow topaz, and the price of the colorless topaz is very low. The value of topaz lies in the beautiful colors, the more intense the color, the greater the value.
Although there are many places where the topaz is produced, the countries that produce the really superior topaz are rare except Brazil and Sri Lanka, so the topaz is a more precious gem. People call it "the stone of friendship" and list it as the birthstone in November.
When choosing topaz, first pay attention to observing cockroaches, cockroaches are not found by the naked eye, and only visible under the magnifying glass 10 times or more is regarded as the top grade. In addition to its color, choose a topaz that has a pleasing color that looks like velvet or velvet, and whether it has an excellent polishing process.
Topaz and citrine look very similar and are easy to mix. Citrine is a fairly ordinary gemstone, its luster is far less than that of topaz, but because of its cheap price, the processing is also very beautiful, it is easy to fake, so it is often used as a substitute for topaz.
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