Chemically, optically, and physically identical to a natural stone, but created in a laboratory.

a laboratory-grown gemstone that has the same physical, chemical, and optical properties as its naturally occurring counterpart

a man-made gemstone

a substance created in a laboratory which is nearly identical to the natural gem in physical appearance, chemical composition and optical properties

A laboratory-made stone whose chemical composition and optical properties are similar to those of it's natural equivalent.

A man-made stone that, unlike a simulant, has the same chemical composition and crystal structure as its natural counterpart.

Synthetic gemstone are not imitations of real gems, but the actual formation by artificial means of the real precious stone, so that the product is identical, chemically, physically and optically, with the one found in nature. Diamonds, ruby, sapphires and emeralds have been manufactured in labs, which possess very nearly identical chemical and physical characteristics to the genuine article. Synthetic corundums, including ruby and sapphire, are very common and they cost only a fraction of the natural stones.