Because of the hardness of gem
Because of the hardness of gem far higher than common glass, it is seldom stained after long haul use, while glass will be effortlessly damaged and stained after rehashed use. In the wake of recognizing plainly, you want to painstakingly check whether the entire item is unblemished, whether there are imperfections and defects on a superficial level, whether the surface is smooth and fine.
Technique for making a decision about precious stone
There are many spots of beginning for precious stone, most gem comes from Brazil, Uruguay, South Africa, etc, essentially Brazil.
Yellow gem
Yellow gem is the upper grade of orange yellow, the less ice breaks and cotton in the gem, the better, the yellower the better. The cost is not entirely settled by its tone, immaculateness and appearance.
Beginning: Brazil, Madagascar.
Amethyst
The less ice cracked cotton there is in the precious stone, the better. Amethyst shows various shades of purple because of its better places of beginning and varieties, so normal amethyst purple reaches from the lightest pale purple to exceptionally rich profound purple, bright ones are ideal.
Beginning: Brazil, South Africa, Uruguay.
Greenish blue
The less ice cracked cotton there is in the precious stone, the better. Greenish blue has a place with an assortment of much ice cracked, with the exception of countenances, others by and large have ice broken cotton, red, blue and green tones are great, and without darkening, the more beautiful the higher the worth.
Beginning: Brazil, a few African nations, with minuscule result in Xinjiang.
Garnet
Normal garnets are red and orange-red series. The red ones are primarily dull red, some red with purple, have a place with assortments with much ice cracked cotton, wristbands and pieces of jewelry by and large have ice broken cotton. The gems are great, with purple, or distinctive tones are ideal.
Beginning: Brazil, India, Mozambique, China.