Rubies and History

Ruby is a precious gemstone, prized for its beauty and rarity. The red color of ruby is caused by the presence of chromium in its crystal structure. Ruby is a type of corundum, a mineral that is colorless in its pure form, but when impurities are present, it can form in a variety of colors.

Ruby is the birthstone for July and is often given as a gift for 15th and 40th wedding anniversaries. Rubies can range in color from light pink to deep red, and the most valuable specimens are those with a rich, saturated red hue.


Ruby has been prized as a gemstone for centuries, and has been used in jewelry, carvings, and other decorative objects for thousands of years. In ancient times, ruby was believed to bring good fortune and was thought to have magical powers. It was also believed to protect the wearer from harm and to bring success and prosperity.

Ruby is found in many countries around the world, but the most valuable rubies come from Myanmar (Burma), where they have been mined for centuries. Other important sources of ruby include Thailand, Cambodia, India, and Africa.


Ruby is a hard and durable gemstone, with a hardness of 9 on the Mohs scale, making it one of the hardest materials after diamond. This makes it ideal for use in jewelry, as it is resistant to scratches and other damage. However, ruby can be prone to chipping or cracking if it is struck too hard or subjected to sudden temperature changes.


Ruby is typically cut into a round, oval, or cushion shape, and can be faceted or cabochon cut. Faceted rubies are highly prized for their brilliance and fire, while cabochon-cut rubies are valued for their smooth, rounded surface and rich, velvety color.


The price of ruby can vary greatly depending on factors such as its size, color, clarity, and origin. Rubies that are large and of high quality can fetch prices in excess of several million dollars per carat. Smaller, lower-quality rubies are more affordable, and can be purchased for much less.


In addition to being used as a gemstone, ruby has a number of industrial uses. It is used as an abrasive in some applications, and is also used as a heat sink in electronic components due to its high thermal conductivity. Ruby is also used as a laser gain medium, as it can be excited by light to emit laser light.


Ruby is often treated to improve its appearance and increase its value. One of the most common treatments is heating, which can improve the color and clarity of ruby. However, this treatment can also cause cracks and other defects, so it is important to be aware of any treatments that have been applied to a ruby when purchasing it.


In conclusion, ruby is a precious gemstone that has been prized for its beauty and rarity for thousands of years. It is a hard and durable gemstone that is highly valued for its rich red color and is used in jewelry, carvings, and other decorative objects. The price of ruby can vary greatly depending on factors such as size, color, clarity, and origin, and it is often treated to improve its appearance and value.

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