: Many gems are heat-treated to enhance color (e.g., Aquamarine and Ruby). These treatments are generally permanent but can make stones more brittle.
: Beginners can start by observing luster , transparency , and hardness . GEMSTONES
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 : Many gems are heat-treated to enhance color (e