Common Gemstones:

Diamond (Colorless, Yellow, Brown, Green, Blue, Reddish, & Orange Black)

Corundum – Ruby (Red), Sapphire (All other colors)

Beryl Species – Emerald (Green), Aquamarine (Blue), Precious Beryl (All other colors)

Chrysoberyl – Alexandrite (Green or Reddish depending on the light), Cat’s-Eye (Yellow, Yellow-Green, & Brownish – different from those that must have additional name, such as quartz cat’s-eye)

Spinel (Red, Orange, Yellow, Brown, Blue, Violet, Purple, Green, & Black)

Topaz (Colorless, Yellow Orange, Red-Brown, Blue, Pink-Red, Red, Violet, & Light Green)

Garnet Group (Green, Yellow, Orange to Red-Brown, & Purple-Red)

Zircon (Colorless, Yellow, Brown, Orange, Red, Violet, Blue, & Green)

Tourmaline Group (Colorless, Pink, Red, Yellow, Brown, Green-Blue, Violet, Black, & Multicolored)

Quartz – Amethyst (Purple, Violet & Light Red-Violet), Citrine (Yellow to Gold-Brown), Aventurine (Green, Red-Brown, Gold-Brown, & Aventurescent), Rose Quartz (Pink & Rose), Smokey Quartz (Brown to Black, & Gray) and Quartz Cat’s-Eye (White, Gray, Green, Yellow & Brown) and Tiger’s Eye (Gold-Yellow & Gold-Brown)

Chalcedony Species (Bluish, White, Gray, Orange to Red-Brown, & Green), Chrysoprase (Green), Bloodstone (Dark Green with Red spots), Agate (All Colors & Colorless to White-Gray with Colored Inclusions), and Jasper (All Colors)

Opal (All Colors with play-of-color)

Peridot (Yellow-Green, Olive-Green, & Brownish Green)

Zoisite – Tanzanite (Sapphire Blue to Violet)

Jade – Jadeite & Nephrite (Usually Green, White, with other colors)

Feldspar – Moonstone (Colorless, White, & Yellow), Sunstone/Adventurine (Orange & Red-Brown), Rhrodochrosite (Rose-Red to Yellowish, Striped), Lapis (Blue, Violet, & Green-Blue with Streaks), Malachite (Light-Green to Black-green, Banded) and Turquoise (Sky-Blue, Blue-Green, Apple-Green)

Iolite (Blue to Violet & Brownish)

Chrysocolla (Green & Blue)