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Red Beryl vs. Ruby

Example of the common size of Red Beryl

Red beryl and rubies are completely different gemstones. Red beryl is a variety of the beryl mineral species (like emeralds), while rubies are a variety of the corundum mineral species (like sapphires). Red beryl is also known as Bixbite, which is not to be confused with Bixbyite; another mineral named after Maynard Bixby. To avoid confusion between the two, the term red beryl is used for this type of beryl.

Aside from color, red beryl and rubies have almost nothing in common. They do not even form under similar conditions; their chemical formulas, inclusions, crystal structures, and more all being very different.

Corundum is chemically written as Al2 O3, aluminum oxide. Beryl is written as Be3 Al2 Si6 O18. The elements that they do share, aluminum and oxygen, are not even in same ratios.


Ruby ID: R10030
Weight: 0.73 Carats
Origin: Mozambique

Red Beryl

Weight: 0.31 Carats

Despite the unusual fancy-cut and incredibly small size, this red beryl is equally included as the ruby on the left. This is amongst the higher-quality examples of red beryl too.


In terms of gemstones, let’s consult the 4Cs for fundamental differences.

  • Color – The color range is the same in both gems. It is the only factor they have in common.
  • Clarity – Gemstones are grouped into three categories based on how included they usually are. Aquamarines often form eye-clean (No inclusions visible without magnification), and are considered Type I. Rubies are a form of corundum, which is classified as a moderately included (Usually has inclusions visible without magnification)Type II gem. Red beryl is near-always very included like their emerald mineral cousins (Emeralds are a specific green color of beryl, the same mineral species as red beryl, although they are different beryl varieties.) as Type III gemstones.

Type I


Type II


Type III

Red Beryl

  • Cut – The gem cutter needs to cut rubies and red beryl differently since different types of crystals have different requirements. Rubies are very hard and have no direction they  like to break in, formally called cleavage. Red beryl lacks distinct cleavage but is much more brittle from inclusions, and not as hard.
  • Carat Weight – While rubies typically grow small, they can be found to be few carats in size. Red beryl rarely reaches a full carat, usually only being a quarter to a fifth of a carat. The faceted example of red beryl above is a highly magnified example of this.

Mining Locations

Since these stones do not share the same formation conditions, mining pockets are scattered all over the world. Rubies have a number of mining sources focused mainly around the Indian Ocean (circled in red on the world map). Red Beryl is only found in the USA, from specific mining claims in Utah and New Mexico; though Utah has been noted for producing a larger amount of gem-quality material. Wah Wah mountains, specifically Crystal Peak, is one location known for spectacular red beryl.

World Map

Wah Wah Mountains, Utah

In terms of gemstones, let’s consult the 4Cs for fundamental differences.

Ideal Red Beryl Formation

Crystal Systems

Ideal Ruby Formation

Rubies and red beryl grow in different crystal systems, with rubies in the trigonal system and red beryl in the hexagonal system. Out of the many differences between the two, the highlight is they grow in different shapes because of these systems. Rubies form in shallow crystal rough usually no thicker than a Tums tablet, while the red beryl rough will never grow larger than what can be held in one hand. Another problem for red beryl is the high amount of inclusions that limits the possible gem yield, despite having a more ideal growth habit than rubies. Whether it is sapphires and rubies or emeralds and red beryl, the color red seems to cause a lot of problems with crystal growth. The elements that color rubies and red beryl, chromium and manganese respectively, are rare elements in nature too.

Use In Jewelry

While an appealing color, red beryl is too rare to be widely used in jewelry. Rubies are much more commercially viable as the number of mining sources indicates. It is also possible to find them over a few carats; though be prepared for some staggering prices comparable to a substantial down-payment on your house.

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