Gemstones have a glamorous appearance. Each gem has different hardness due to its different compositional elements. So what do you know about gem hardness? What is the hardness of the stone? Unlike plasticine and cement walls, the hardness of the gemstones we refer to is “Mohs hardnessâ€, which is the standard used by German mineralogists in 1812 to use relative scoring hardness. We often say that hardness determines the wear resistance, so the higher the hardness of the gemstone, the less likely it is to be damaged in everyday wear. According to the hardness level from 10 to 1 step by step, the lower the level, the lower the ability to resist scratching, scratching and grinding. For example, our favorite diamonds have a very high hardness and a hardness rating of 10; a little bit more than a diamond is corundum, which has a hardness of 9. However, although it is only one grade, the hardness of diamond is 14 times that of corundum. Because diamonds have a very high hardness, it is also convenient for identifying true and false diamonds. We only need to use a diamond hardness tester to scribe the gems. If there are no traces, then it is a real diamond. Now everyone knows about the hardness of gemstones, right? Because each gem has its own hardness, gemstones of different hardness are not accessible, otherwise the gemstones with low hardness will be scratched and worn due to friction.
A Dog Tag, pet ID tag, or Pet tag is a small flat tag worn on pets' collars or harnesses.
Our pet tags are made from the best quality materials, such as zinc alloy, aluminum, stainless steel, stainless steel iron and iron. And our range includes a huge variety of different shapes and sizes to suit every type of dog or cat. All tags are supplied with a strong split ring for attachment to your pet's collar.
Metal pet tags usually have their information embossed or engraved onto, or stamped into, their surface(s). The characters created by embossing or engraving are made by removing some of the tag's surface and are not typically as deep as stamped characters, which are made by stamping the tag with a metal die.
Pet Name Tags,Custom Pet Tags,Personalized Pet Tags,Pet Tag Shenzhen MingFengXing Art & Craft Products CO., LTD. , https://www.mf-gift.com