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In page Beryl:

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Golden beryl can range in colors from pale yellow to a brilliant gold. Unlike emerald, golden beryl generally has very few flaws. The term "golden beryl" is sometimes synonymous with heliodor (from Greek hēlios – ἥλιος "sun" + dōron – δῶρον "gift") but golden beryl refers to pure yellow or golden yellow shades, while heliodor refers to the greenish-yellow shades.[citation needed] The golden yellow color is attributed to Fe3+ ions.[1][2] Both golden beryl and heliodor are used as gems. Probably the largest cut golden beryl is the flawless 2,054-carat (410.8 g) stone on display in the Hall of Gems, Washington, D.C., United States.[3]