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Quartz which occurs in bands of yellow and purple has been given the name of ametrine (amethyst + citrine).

Initially cutters favored windowed emerald shapes with a 50/50 split of colors, and much of the rough is still cut this way. More recently, however, some cutters have begun to cut a variety of shapes, many of which create internal reflections that blend the yellow and purple into attractive shades of rosy gold and mauve, or create mosaic-like flashes of both yellow and purple.

For more information see our Ametrine Info Page