The Ruby

The Red Stone From Burma

Ruby is one of the most precious gems.
It belongs to the family of corundums (as sapphires). Its red color is due to the presence of chromium. It has been confused with spinel or garnet, which can be found in the same mines.
Known since Antiquity, it has long been used to treat all kinds of pain. It was credited with these virtues because of its blood-like color.

Collier Chaumet, Bague Dior

With a hardness of 9 on the Mohs scale, the ruby ​​can be set in a ring, bracelet, necklace or earrings.

Collier et Bracelet Camélia, Rubis, Diamants et Or Gris, Chanel

Collier et Bracelet Camélia, Rubis, Diamants et Or Gris, Chanel


Like emeralds, rubies are generally included stones. These are not flaws, however the purer a stone, the more valuable it will be.
Color is the most important criterion when appraising a ruby. Quite dark and deep reds are highly sought after, unlike light or milky colors.

Bague Rubis, Diamants, Or Gris 

The first synthesis (stone created entirely in the laboratory) of rubies was created in 1902 by August Verneuil. As with sapphires, this fusion method is recognizable by curved growth zones. These zones may exist in natural stone, but they will be straight.

These synthetic stones are today widely used in watchmaking.

Mécanisme de montre 


For centuries, the ruby came from Burma. The most beautiful, called “pigeon blood” are extracted from the mine in the Mogok valley. Of magmatic or metamorphic origin, we also find rubies in Thailand, Mozambique, Madagascar, Sri Lanka or Australia.

Vallée de Mogok

Ruby is the birthstone for the month of July. In France, the Wedding of Rubies corresponds to 35 years of marriage.

If you are interested in rubies, don’t hesitate to discover what les Pierres de Julie have to offer in the store…

We are also available for any free expertise of your ruby jewelry, for that you can send an email with your photos to

Welcome to our store in the Swiss village of the 15th arrondissement of Paris!

Les Pierres de Julie


Les Pierres de Julie


Les Pierres de Julie


Les Pierres de Julie


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