Ruby

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

Satellite.png

BIRTHSTONES &
ANNIVERSARIES

Ruby is the birthstone for July and the gem for the 15th and 40th anniversaries.

ABOUT RUBY

Rubies can command the highest per-carat price of any colored stone. This makes ruby one of the most important gems in the colored stone market. In its purest form, the mineral corundum is colorless. Trace elements that become part of the mineral’s crystal structure cause variations in its color. Chromium is the trace element that causes ruby’s red color.


WHY WE LOVE THIS GEMSTONE

RATNARAJ

In Sanskrit, ruby is ratnaraj, meaning the king of gems.
 

MOGOK

Myanmar’s legendary valley of rubies;
the source of many of the world’s most fabulous gems.

$32.4 MILLION

On May 12, 2015, a 25.59-carat ruby ring sold for
$1,266,901 per carat, setting a new record at auction for a colored gemstone.

INTENSE RED GLOW

Fine ruby glows with intense red in sunlight thanks to red fluorescence, which intensifies its red colors.

FIRST LASER

The first laser was created in1960 using the
red fluorescence light emitted by ruby.

CHROMIUM

Chromium causes ruby's red. Gemologists
consider it the "rock star" of trace elements.


QUALITY FACTORS

The prices of fine-quality rubies have been breaking auction records.

CUT Color is the most significant factor affecting a ruby’s value: Fine gems are a pure, vibrant red to slightly purplish red.

CUT
Color is the most significant factor affecting a ruby’s value: Fine gems are a pure, vibrant red to slightly purplish red.

COLOR If a ruby's inclusions affect its transparency or brilliance they reduce the gem’s value significantly.

COLOR
If a ruby's inclusions affect its transparency or brilliance they reduce the gem’s value significantly.

CLARITY Rubies are commonly fashioned as mixed cuts, which have brilliant-cut crowns and step-cut pavilions.

CLARITY
Rubies are commonly fashioned as mixed cuts, which have brilliant-cut crowns and step-cut pavilions.

CARAT WEIGHT Fine-quality rubies over one carat are very rare and price goes up significantly as size increases.

CARAT WEIGHT
Fine-quality rubies over one carat are very rare and price goes up significantly as size increases.