Ametrine Gemstone | Natural Ametrine Stone - GIA
Ametrine is a transparent, bicolored Quartz with the Contrasting Colors of both Amethyst & Citrine in the same gem giving it an intriguing appearance.
Ametrine Gemstone | Natural Ametrine Stone - GIA
Ametrine is a bicolor gem that’s highly prized when it displays an attractive balance between its most desirable amethyst and citrine shades.
Ametrine History and Lore - GIA
Explore ametrine history, research, quality factors, and more in the GIA Gem Encyclopedia.
Ametrine Description - GIA
Transparent, bicolored quartz with the colors of both amethyst and citrine in the same gem is called ametrine or amethyst-citrine. The contrasting colors give it an intriguing appearance. …
Ametrine Quality Factors - GIA
Fine ametrine shows medium dark to moderately strong orange, and vivid to strong purple or violetish purple. Larger gems, usually those over five carats, tend to show the most intensely …
From the Andes to the Pantanál: In Search of Ametrine - GIA
2013年4月30日 · We bring you to the source of one of the world’s most unique gems: ametrine. In this gem, nature has combined two quartz varieties, purple amethyst and golden citrine. …
Anahí’s “New” Ametrine | Gems & Gemology - GIA
Anahí mine ametrine is cut to maximize yield while also blending the yellow and purple colors. The 33.55 ct gem on the left was cut by Dalan Hargrave; the 44.23 ct concave-cut stone on …
Bicolor Cuprian Tourmaline
2020年1月31日 · Ametrine is a well-known bicolor gem, a purple and yellow quartz combining amethyst and citrine. In addition to the ametrine variety of quartz, other colored gemstones …
Does GIA offer reports for ametrine?
GIA offers a Colored Stone Identification Report for ametrine, but it is not commonly requested – except for a gem of significant value – because of the cost of the report compared to the value …
Amethyst Gemstone | Amethyst Stone - GIA
Ametrine. In Bolivia, amethyst and citrine occur in the same crystal. The unique gems, called ametrine, are half purple and half yellow.