Ametrine

Big Photo

Ametrine Dreamscape Cut
38.59 carats
© johndyergems.com

Colour-zoned variety of Quartz, which consists half of amethyst and other half of citrine.

Ametrine Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 
 
 
 
 

Ametrine Gemstones by Size

This table shows distribution of Ametrine gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.97 cts
Heaviest:325 cts
Average:20.33 cts
Total photos:83
Do you have a larger Ametrine? Why not upload a photo?
0.97ct to 33.37ct33.37ct to 65.78ct65.78ct to 98.18ct98.18ct to 130.58ct130.58ct to 162.99ct162.99ct to 195.39ct195.39ct to 227.79ct227.79ct to 260.19ct260.19ct to 292.60ct292.60ct to 325.00ct
General Information
A variety or type of:Quartz
Photos of natural/un-cut material from mindat.org
Synthetic Ametrine
Color boundary may be bended and/or parallel to optic axis - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 7
Physical Properties of Ametrine
Mohs Hardness7
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity2.65
gemdat.org, Management Team (2012)
Optical Properties of Ametrine
Refractive Index1.544 to 1.553
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Optical CharacterUniaxial/+
gemdat.org, Management Team (2012)
Birefringence0.009
gemdat.org, Management Team (2012)
Dispersion0.013
gemdat.org, Management Team (2012)
Colour
Colour (General)Violet, yellow, with zones of purple and orange
Gemdat.org, Management Team (2012)
TransparencyTransparent,Translucent
gemdat.org, Management Team (2012)
LustreVitreous
gemdat.org, Management Team (2012)
Fluorescence & other light emissions
Fluorescence (General)Inert to weak greenish or bluish
gemdat.org, Management Team (2012)
Crystallography of Ametrine
Crystal SystemTrigonal
gemdat.org, Management Team (2012)
Inclusions in Ametrine
Irregular planes of 2 phase inclusions - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 7
Further Information
Mineral information:Ametrine information at mindat.org
Significant Gem Localities
Bolivia
 
  • Santa Cruz
    • Sandoval Province
      • La Gaiba District
Laurs (2001, 2010)
Copyright © Jolyon & Katya Ralph 1993-2019. Site Map. Locality, gem & photograph data are the copyright of the individuals who submitted them. For more information please contact the . Gemdat.org is an online information resource dedicated to providing free gemmological information to all.