Category: Jewelry Term

Luminescence is light emitted by a gemstone after it absorbs energy from a source other than ordinary heating. In...

Isotropic describes a material whose optical properties are the same in every direction. In gemology, isotropic materials are normally...

Interference colors are colored patterns produced when polarized light waves interact in certain gemstones. In gemology, they are commonly...

Hardness in gemology describes a material’s resistance to scratching. It is commonly expressed on the Mohs scale, which ranks...

Graining in gemology refers to growth-related lines, planes, or structural irregularities within or on the surface of a gemstone....

Crystal structure is the orderly, repeating arrangement of atoms, ions, or molecules within a crystalline material. In gemstones, this...

Crystal habit is the typical external shape a mineral crystal develops as it grows. In gemology, it describes forms...

Anisotropy in gemology means that a crystalline material has physical or optical properties that vary with direction. In an...

An absorption spectrum is the pattern of wavelengths of light that a gemstone absorbs as light passes through it...

Ring width is the distance across a ring band from one side edge to the other, typically measured in...

Ring diameter is the straight-line distance across the inside of a ring, measured from one inner edge to the...

A wedding ring is a ring worn to symbolize marriage. The term often means a wedding band, although it...

In jewelry, a mounting is the metal framework that holds a gemstone or forms the structure of a piece...

Zircon is a naturally occurring gemstone made of zirconium silicate (ZrSiO₄). It comes in several colors, including blue, brown,...

White sapphire is a colorless or nearly colorless variety of corundum, the mineral family that also includes blue sapphire...