Jewel

Jewels (宝石), also known as gemstones, gems and precious stones are pieces of mineral crystal and certain other substances, which are cut and polished to use in and other adornments, being valued by humans because of their properties.

Various pieces of folklore and superstitution involve specific jewels or types of jewels, and as such, they play a role in certain forms of magic. Certain jewels also have properties which are utilized in technological applications.

Principles
There are various classifications and types of jewel or gemstone, according to their qualities and properties. Most are mineral crystals, though there are certain non-mineral rocks and organic materials which are considered gemstones. The five of antiquity are  (white),  (red),  (green),  (blue) and  (purple). Others include, , , , , , and.

 are gems which are assigned to each of the twelve months (e.g. turquoise or lapis lazuli for December), along with the respective periods of birth and Zodiac signs. There are several different versions of the birthstone list, with the most well-known one at present being one created by the American National Association of Jewelers.

Rubies, sapphires and oriental emeralds are largely composed of the mineral, the crystalline form of aluminium oxide.

Jewels can be produced through artificial means. One practice is the creation of s, created by compressing the carbon in the ashes left behind after a person is cremated. The analogy of the difference between a natural gemstone and an artificial one has been used to distinguish espers artificially created through the Power Curriculum Program and espers who have arisen in the natural world, the latter being referred to as Gemstones.

Christmas Day Arc
During the incident at the London Stock Exchange on Christmas Day, Leivinia Birdway informed Stiyl Magnus that Anna Sprengel had been using deals in in old rubies and pure gold metalwork, inheritance of the Rosicrucians, for the money she was spreading around to construct her company R&C Occultics.

During their battle later that day, the St. Germain-infested Kamijou Touma and Anna Sprengel ended up in a jewel store in a department store's jewellery section, which had been affected by the influence of R&C Occultics, offering among other things a December Gematria Special, converting customers' names to numbers free of charge to find gems for them. Several beliefs concerning jewels (including crystal healing and birthstones) were discussed by Touma and St. Germain, as they were attempting to deduce the mechanism behind Anna's spell.