Ruby

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

BRIEF INTRO

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.

RATNARAJ

In Sanskrit primary liturgical language of Hinduism, 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.

TREATMENTS

There are processes used to alter the color, apparent clarity, or improve the durability of gems. Some gemstones have synthetic counterparts that have essentially the same chemical, physical, and optical properties, but are grown by man in a laboratory.

July

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

Traces of chromium give this red variety of the mineral corundum its rich color. Long valued by humans of many cultures. In ancient Sanskrit, ruby was called ratnaraj, or “king of precious stones.”