Each ametrine necklace in this collection features a genuine bicolor gemstone that forms when amethyst and citrine crystallize together in a single quartz crystal. Found primarily in Bolivia's Anahí Mine, ametrine displays zones of purple and golden yellow within the same stone. Browse 9 sterling silver pendants priced from $740 to $1505, all set in .925 silver and shipped free within the US.
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Most commercial ametrine originates from the Anahí Mine in eastern Bolivia. This mine has produced bicolor quartz since the 17th century and remains the dominant global source.
Yes, natural ametrine forms when temperature variations during quartz crystallization cause different oxidation states of iron, producing purple amethyst zones and yellow citrine zones in one crystal.
Ametrine measures 7 on the Mohs hardness scale, the same as other quartz varieties. This makes it durable enough for pendants and most jewelry types with normal care.