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birthstones diamond education book an appointment raffi cares contact us gemstones education home > education > gemstones education gemstones a-z a free informational reference guide to gemstones alexandrite it's the color-change variety of the mineral, chrysoberyl. bluish green in daylight, purplish red
diamond's color. emerald the most valued variety of beryl, emerald was once cherished by spanish conquistadors, inca kings, moguls, and pharaohs. today, fine gems come from africa, south america, and central asia. garnet the garnet group of related mineral species offers gems of every hue, including fiery red...
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