Laboratory ruby

The laboratory ruby are man-made synthetic gems that mimic the physical, chemical and optical properties of natural rubies. Also known as synthetic rubies or cultured rubies, these gems are manufactured in laboratories using advanced technologies to recreate the natural conditions under which rubies form in the earth's crust.

Characteristics of laboratory rubies

Laboratory rubies have similar characteristics to natural rubies. They have the same hardness on the Mohs scale, which is 9, and also have the same characteristic red colour due to the presence of traces of chromium. Here are some of the distinctive characteristics of laboratory rubies:

• Purity and clarity : Laboratory rubies are often purer and clearer than their natural counterparts, as they are created under controlled conditions that minimise inclusions and defects.
• Colour : Laboratory rubies can be manufactured to achieve an intense, uniform red colour, often brighter than that of natural rubies.
• Durability : Like natural rubies, laboratory rubies are extremely durable and scratch-resistant, making them an ideal choice for luxury jewellery.

Laboratory ruby manufacturing process

There are several methods for creating laboratory rubies, the most common being the Verneuil method and the flow growth method.

• Verneuil method : This technique, also known as flame fusion, involves melting aluminium oxide powder with traces of chromium at extremely high temperatures. The molten material is then crystallised to form a ruby.
• Flow growth method : This method involves dissolving the raw materials in a chemical flux, which is then slowly cooled to allow ruby crystals to form. This technique produces laboratory rubies with fewer inclusions and greater clarity.

Advantages of laboratory rubies

Laboratory rubies offer several advantages over natural rubies:

• Cost : Laboratory rubies are generally less expensive than natural rubies, as they do not require expensive mining and are produced in larger quantities.
• Environmental sustainability : Laboratory ruby production has a lower environmental impact than mining, making it a more environmentally-friendly option.
• Availability: Laboratory rubies are more readily available and can be produced according to demand, guaranteeing a constant supply of high-quality stones.

Frequently asked questions about laboratory rubies

Are laboratory rubies real rubies?

Yes, laboratory rubies are considered to be real rubies because they have the same chemical, physical and optical properties as natural rubies. The main difference lies in the way they are formed.

How can you tell a natural ruby from a laboratory ruby?

It is often difficult for a non-expert to distinguish a natural ruby from a laboratory ruby with the naked eye. However, gemologists use specialised instruments to identify inclusions and growth characteristics specific to laboratory rubies.

Are laboratory rubies more durable than natural rubies?

Laboratory rubies and natural rubies have the same hardness on the Mohs scale (9) and are therefore equally durable. Durability depends more on the individual quality of each stone than on its origin.

Are laboratory rubies a good investment?

Laboratory rubies can be an excellent choice for everyday jewellery or high-end fashion pieces because of their lower cost and superb appearance. However, they do not have the same resale or collector value as rare, high quality natural rubies.

In conclusion, laboratory rubies represent an attractive and affordable alternative to natural rubies for those looking for luxury jewellery without compromising on quality or beauty. Thanks to their precise manufacture and similar characteristics to natural rubies, they are becoming increasingly popular in the world of luxury jewellery.