Laboratory Alexandrite

L'laboratory alexandrite is a synthetic gemstone that mimics the visual and chemical properties of natural alexandrite. First discovered in Russia in 1830, natural alexandrite is famous for its remarkable colour change. However, due to its rarity and high price, the creation of alexandrite in the laboratory has gained in popularity. This synthetic version offers a more affordable alternative while retaining the unique characteristics of the natural gemstone.

What is laboratory alexandrite?

Laboratory alexandrite is produced by recreating the natural geological conditions necessary for the formation of this precious stone. Scientists use advanced techniques to grow crystals of corundum, a mineral that forms the basis of alexandrite. The most common methods for producing alexandrite in the laboratory include the Czochralski method and the hydrothermal method. These methods reproduce the chemical elements and the temperature and pressure conditions required to create alexandrite crystals.

Characteristics of laboratory alexandrite

Like its natural counterpartlaboratory alexandrite is famous for its exceptional colour change. In natural light, it generally appears green, but under incandescent or artificial light, it displays reddish to violet hues. This phenomenon is due to the presence of chromium in the stone's crystalline structure.

In terms of hardness, laboratory alexandrite has a hardness of 8.5 on the Mohs scale, making it durable enough for everyday use in jewellery. It also has excellent clarity and can be cut into different shapes and sizes, offering great versatility for luxury jewellery designers.

The advantages of laboratory alexandrite

• Affordable cost One of the main advantages of laboratory-grown alexandrite is its significantly lower cost compared with natural alexandrite. This allows more people to own this unique gemstone.
• Ethics and sustainability The production of gemstones in the laboratory reduces the need for mining, thereby minimising the environmental impact and ethical concerns associated with certain mining practices.
• Consistent quality Synthetic stones offer consistent, predictable quality, with clarity and colour that are often superior to those of natural stones.

Frequently asked questions about laboratory alexandrite

How do you recognise a laboratory alexandrite?

It is often difficult to distinguish laboratory-grown alexandrite from natural alexandrite with the naked eye. However, gemologists use specialised tests, such as spectroscopy and chemical analysis, to identify synthetic stones. Another indicator may be the price; natural alexandrites are generally much more expensive.

Is laboratory-grown alexandrite as valuable as natural alexandrite?

Although laboratory-grown alexandrite has the same physical and visual properties as natural alexandrite, it is generally considered less valuable because of its synthetic origin. However, it remains a high-quality gemstone that is highly prized in luxury jewellery.

Can laboratory-grown alexandrite be used in luxury jewellery?

Absolutely! Laboratory alexandrite is often used in luxury jewellery because of its exceptional beauty and durability. It is particularly popular in rings, necklaces and earrings.

Where can I buy laboratory alexandrite?

You can buy laboratory alexandrite from specialist jewellers, online or in gem shops. Be sure to check the seller's reputation and ask for a certificate of authenticity to guarantee the quality of the stone.

In conclusionlaboratory alexandrite is a fascinating and affordable alternative to natural alexandrite. With its unique colour-change properties, durability and affordability, it is an exceptional choice for luxury jewellery lovers.