Tanzanite

Turquoise hardness is #5 to #6 on Mohs scale, and generally fair to good in toughness. Sources are China, Iran, and the US. Turquoise is one of the world’s most ancient gems. Archaeological excavations revealed that Egyptian royalty wore turquoise jewelry as early as 5500 BC, and Chinese artisans were carving it more than 3,000 …

January Almandine/Garnet February Amethyst/Quartz March Aquamarine/Beryl April Diamond May Emerald/Beryl June Alexandrite, Pearl, Moonstone July Ruby/Corundum August Spinel, Peridot, Sardonyx September Sapphire/Corundum October Opal, Tourmaline, Rose zircon November Topaz, Citrine December Turquoise, Blue zircon, and Tanzanite