Citrine is one of the most popular gemstones available today. Natural untreated citrine is typically pale yellow to golden in color and is often accompanied by smoky brownish tones. Deeper colors can occur ranging from golden orange to rich gold-brown. Darker colors are typically considered more desirable than lighter lemon colors.Citrine is known to occur with excellent transparency. Eye-clean specimens are quite common leaving little reason to buy citrine stones with visible inclusions. Citrine has an attractive vitreous luster when cut and polished.It is nearly impossible to differentiate between cut citrine and yellow topaz visually, but they differ in hardness.