Gemstones File

: The presence of internal "inclusions" or surface blemishes. In colored gems, some inclusions are expected and can even help identify the stone.

Gemstone Buying Guide - The National Association of Jewellers GEMSTONES

: Evaluated by its hue (the basic color), tone (lightness/darkness), and saturation (intensity). : The presence of internal "inclusions" or surface blemishes

: Many gems are heat-treated to enhance color (e.g., Aquamarine and Ruby). These treatments are generally permanent but can make stones more brittle. : Many gems are heat-treated to enhance color (e

: A broad category for all other stones, including Amethyst , Topaz , and Opal . Organic Gems : Non-minerals like Amber , Pearl , and Jet . The "4 Cs" of Gemstone Value

Gemstones are often associated with birth months as a popular gift choice. : Garnet February : Amethyst March : Aquamarine April : Diamond May : Emerald June : Pearl / Alexandrite July : Ruby August : Peridot / Spinel September : Sapphire October : Opal / Tourmaline November : Topaz / Citrine December : Turquoise / Tanzanite Identification & Care