Moonstone

Alexandrite is #8.5 on Mohs scale and has excellent toughness. Sources are Brazil, East Africa, Russia, and Sri Lanka. Alexandrite is a rare chrysoberyl variety with chameleon like qualities. Its color is a lovely green in daylight or fluorescent light, but it changes to brownish or purplish red in the incandescent light from a lamp …

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