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Ruby
Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

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Sea Urchin–Like 3D Radial Fissures in a Heated Mong Hsu Ruby
Examination of a 1.34 ct ruby reveals a unique inclusion formed during heat treatment.
Rubies from the Niassa and Cabo Delgado Regions of Northern Mozambique
Abstracts; Fall 1991
This article, from the Fall 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Abstracts; Winter 1991
This article, from the Winter 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Ruby Description
Ruby Care and Cleaning Guide
Learn about ruby's durability and how to care for your ruby jewelry.
Ruby Quality Factors
Ruby can command the highest prices of any colored gemstone. The per-carat prices of fine-quality rubies have been rising consistently, many times breaking auction records. Click here and learn about the factors that make ruby so desirable!
Ruby History and Lore
The name ruby comes from the Latin word ruber, which means “red.” The glowing red of ruby suggested an inextinguishable flame burning in the stone...
Ruby Journey
Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire
Suggested Reading on Rubies and Their Inclusions
Suggested Reading on Rubies and Their Inclusions
Corundum with Spinel Corona from the Tan Huong–Truc Lau Area in Northern Vietnam
Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.





