![]() ![]() Instead of being mined from the earth, pearls are created by oysters. One thing that has to be noted is that different gems have different properties like different crystals having different properties. While not technically a stone, pearl is an important gem for jewelry consumers. When comparing the value of crystals and gems, the latter ones are priced more.ħ. ![]() Crystals are mainly classified as cubic, hexagonal, tetragonal, orthorhombic, monoclinic and rhombohedral.Ħ. /ct Become a member to unlock prices How to Use the Gem Price Guide The IGS Gem Price Guide covers commonly traded colored gems as well as more unusual, collectible gems. Gems can be classified according to the chemical composition gemstone and the crystal structure. Gem is also known as gemstone that can be prescious or semi precious that is cut and polished to be used in jewelry.ĥ. Crystals are solids that have atoms, ions and molecules fixed in a regular order, which extend in three dimensions.Ĥ. Gems can be mineral based such as ruby or diamond and organic based such as amber.ģ. A gem can be a crystal whereas a crystal will not always be a gem.Ģ. The crystals also come in colours according to the transmission of light through them.ġ. When comparing the colour between gems and crystals, the gems come in various colours like red, green and blue. One thing that has to be noted is that different gems have different properties as different crystals having different properties. When comparing the hardness, specific gravity, refractive index, durability and fluorescence, the crystals are different from the gems. Almost everything related to minerals can be termed as crystals as they have specific properties. ![]() When comparing the value of crystals and gems, the latter ones are priced more. Crystals are mainly classified as cubic, hexagonal, tetragonal, orthorhombic, monoclinic and rhombohedral. The precious gems include diamond, sapphire, ruby and emerald and all other gems are considered to be semi-precious. Gem is also known as gemstone that can be prescious or semi precious that is cut and polished to be used in jewelry. Crystals can also be defined as objects that have well-defined geometric shapes. Gems can have mineral bases such as ruby or diamond and an organic base such as amber.Ĭrystals are solids that have atoms, ions and molecules fixed in a regular order, which extend in three dimensions. Crystals are pure substances that have molecules arranged in a regular geometric pattern.Ī gem can be a crystal whereas a crystal will not always be a gem. They have a characteristic chemical and physical properties and usually a regular crystal. Gems are beautiful stones that are used in making jewelry. Minerals are solid substances that have formed naturally in the Earth. Gem is a rare mineral that is highly priced. ![]()
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