Gahnospinel Value, Price, and Jewelry Information
Gahnospinel is a solid-state solution between spinel and gahnite.
Start an IGS Membership today
for full access to our price guide (updated monthly).Gahnospinel Value
Highest values go to pure blue, size and clarity.
Gahnospinels from Sri Lanka
Gahnospinels from Sri Lanka | |||
ZnO(%) | FeO(%) | N | S.G. |
0.14 | 2.34 | 1.716 | 3.6 |
7.18 | 1.92 | 1.723 | 3.72 |
10.27 | 2.52 | 1.731 | 3.77 |
12.98 | 1.47 | 1.737 | 3.86 |
18.21 | 1.93 | 1.747 | 3.97 |
24.81 | 1.90 | 1.752 | 4.05 |
Comments
International Gem Society
Related Articles
Black Diamond Value, Price, and Jewelry Information
Black is a color that can say a lot. Wearing black diamond jewelry communicates a sense of unique strength and...
Read More
Chameleon Diamond Value, Price, and Jewelry Information
Professionals will tell you never to trust a trade name used to describe the appearance of a fancy colored diamond....
Read More
Gray Diamond Value, Price, and Jewelry Information
Diamonds with a pure gray hue are a rare treasure indeed. More often, gray is mixed with blue or violet...
Read More
Green Diamond Value, Price, and Jewelry Information
Green diamonds are the oddballs of the fancy colored diamond varieties. Their rare color is usually the result of damage...
Read More
Latest Articles
Table of Gems Ordered by Crystal System
This table contains a selection of minerals gemologists may encounter as jewelry stones or gem specimens. The gems are sorted...
Read More
Mineral Cleavage Testing: A Practical Guide
Cleavage testing is an important procedure for mineral identification. Learn what cleavage means and how to test mineral samples.
Read More
Axinite Value, Price, and Jewelry Information
When faceted, the members of the axinite mineral group are usually intensely pleochroic, with rich brown and purple colors dominating....
Read More
Introduction to Native Elements
Native elements or minerals include well-known materials like gold, silver, and diamonds. Learn how to identify common native minerals.
Read More
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!