Gemmology
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Simple colour schemeredorangey redreddish orangeorangeorangey yellowyellowgreenish yellowyellowish greenslightly yellowish greengreenvery slightly bluish greenbluish greenvery strongly bluish greengreen-blue or blue-greenvery strongly greenish bluevery slightly greenish bluebluevioletish bluebluish violetvioletbluish purplepurplereddish purplestrongly purplish redslightly purplish redcolourlessgreyblack

Ametrine — specimens [gallery view]


A variety of quartz. Ametrine crystals are made of alternating sectors of violet and yellow to orange colour. While the violet sectors are made of amethyst, the yellow or orange sectors are not made of citrine, because they are coloured by inclusions of iron compounds. Upon heating ametrine the violet sectors pale, while the yellow-orange ones keep their colour.
Ametrine — specimen 0226
0226
Mozambique
Ametrine — specimen 0102
0102
Bolivia
Ametrine — specimen 0128
0128
Mozambique
Ametrine — specimen 0208
0208
Bolivia
Ametrine — specimen 0299
0299
Mozambique
Ametrine — specimen 0397
0397
Bolivia

Ametrine — specimens — 6
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