diamond
The beauty of gemstones is composed of color, luster, transparency, purity and other factors, which are the primary conditions for the beauty of gemstones. Gemstones can be colored or colorless. Colored gems requires its bright, uniform and pure color. For example, the price of high-quality emeralds can be comparable to that of high-quality diamonds of the same quality. For colorless gems (except diamonds), color is not the main factor in evaluation.
emerald
Gems should have good transparency and purity. Although colored gems cannot achieve clarity and transparency, higher transparency will improve its overall quality. The transparency and purity of colorless gemstones are important factors that constitute the aesthetic feeling of gemstones. For example, colorless crystals are called people's favorite gemstones because of their high transparency, which can let light pass through and give people a crystal clear feeling. The same high transparency means a good "water head" for jadeite, which is an important condition for high-grade jadeite.
High transparency jadeite
Gloss is the visual effect of reflected light on the surface of a gem. Added a aura to the gem. Colorless diamonds are the king of gems. The important factor is that it has a strong luster, shining in the sun, giving people a dazzling feeling.
Gemstones should not only be brightly colored, but also durable, that is, they have certain hardness, toughness and chemical stability. The durability of gemstones is determined by their particularly stable physical and chemical properties, but for some gemstones, such as organic gemstones, this condition can be appropriately relaxed.
ruby
The last factor is the rarity of precious stones, which are rare and precious because of their output.