Noun
heliodor (countable and uncountable, plural heliodors)
A richly coloured form of golden beryl found in southwest Africa.
Both golden beryl and heliodor are used as gems. Source: Internet
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. Source: Internet