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A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments.
Hue refers to color as we normally use the term. Transparent gemstones occur in the pure spectral hues of red, orange, yellow, green, blue, violet. [25] In nature, there are rarely pure hues, so when speaking of the hue of a gemstone, we speak of primary and secondary and sometimes tertiary hues. Ruby is defined to be red.
This is a list of gemstones, organized by species and types. Minerals. There are over 300 types of minerals that have been used as gemstones. Such as: A–B
Jet as a gemstone became fashionable during the reign of Queen Victoria. [46] It originally became fashionable in the 1850s after the queen wore a necklace of it as part of mourning dress for Princess Victoria of Saxe-Coburg and Gotha. [46] Later the Queen wore Whitby jet as part of her mourning dress while mourning the death of Prince Albert.
Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...
It is the birth stone of March. [5] Aquamarine is a fairly common gemstone, [6] rendering it more accessible for purchase, compared to other gems in the beryl family. [7] Overall, its value is determined by weight, color, [5] cut, and clarity. [8] It is transparent to translucent and possesses a hexagonal crystal system. [9]