Calcite (NMNH G11452) | Smithsonian National Museum of Natural History

Smithsonian Institution

Smithsonian National Museum of Natural History

Greg Polley

This 293ct calcite gem from Mexico is a modified step-cut faceted by Michael Gray. It displays the double refraction and dispersion typical of this mineral. It is the largest calcite from Mexico in the National Gem Collection.

This 293ct calcite gem from Mexico is a modified step-cut faceted by Michael Gray. It displays the double refraction and dispersion typical of this mineral. It is the largest calcite from Mexico in the National Gem Collection.

This 293ct calcite gem from Mexico is a modified step-cut faceted by Michael Gray. It displays the double refraction and dispersion typical of this mineral. It is the largest calcite from Mexico in the National Gem Collection.

Rectangular emerald-cut colorless calcite weighing 293.27 ct. [AUTO]

Rectangular emerald-cut colorless calcite weighing 293.27 ct. [AUTO]

View Calcite in the GeoGallery.

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Site Name:: Mexico
Taxon:: Calcite - Primary

Record Last Modified:: 17 Sep 2024
Site Number:: 3996063
Specimen Count:: 1

Other Numbers:: IGSN ID : 10.58151/NHB002PT1
USNM Number:: NMNH G11452-00

Color:: Colorless
Cut:: Rectangular Emerald
Weight:: 293.27 ct

Place:: Mexico, North America

See more items in:: Mineral Sciences; Gems; NMNH - Mineral Sciences Dept.

Record ID:: nmnhmineralsciences_11149740

GUID (Link to Original Record):: http://n2t.net/ark:/65665/3e220f0b6-489b-4f34-a1d3-cb1d50e46a96