The name "semi-precious stones" is used for all types of gemstones that are not classified as "precious". Any gemstone suitable for use in personal adornment will be included. Himalyaquartz is leading as the best supplier and exporter of semi-precious stones worldwide.
No real scientific backing with precious and semi-precious. So are aquamarine, emerald is precious while aquamarine is semi-precious, when this classification came, it was mainly due to price and rarity differences between the four precious gems and the rest today some semi-precious gems can be worth much more than precious.
Characteristics and Classification of Semi-precious Stones:
Most gemstones are hard, but some softer minerals are used in jewelry because of their luster or other physical properties that have aesthetic value.
The traditional classification in the West, which goes back to the ancient Greeks, begins with the distinction between precious and semi-precious; Similar distinctions are found in other cultures. Precious stones in modern use are diamonds, rubies, sapphires, and emeralds, all other gems being semi-precious.
Precious stones in modern use are diamonds, rubies, sapphires, and emeralds, all other gems being semi-precious. This distinction refers to the purity of the stones concerned as well as their quality in antiquity: all are translucent in their purest forms, except colorless diamonds, and very hard. Other stones are classified on the basis of their color, translucency, and hardness.
The traditional distinction does not necessarily affect modern values. while garnets are relatively cheap, a green garnet called a severity may be worth far more than a mid-quality emerald.