Glossary
Synthetic corundum
Synthetic corundum
Le synthetic corundum is a laboratory-produced gemstone that mimics the characteristics of natural corundum. This stone is mainly composed of aluminium oxide (Al2O3) and is renowned for its remarkable hardness, just below diamond on the Mohs scale. Synthetic corundum consists mainly of ruby and the sapphirewhich are coloured varieties of corundum.
Characteristics and properties of synthetic corundum
Synthetic corundum is renowned for its durability and scratch resistance, making it the preferred choice for creating luxury jewellery. Here are just a few of its distinctive features:
- Hardness : With a hardness of 9 on the Mohs scale, synthetic corundum is extremely resistant to scratches, second only to diamond.
- Colour : The colour of synthetic corundum can vary depending on the elements added during its manufacture. For example, chromium produces red rubies, while iron and titanium produce blue sapphires.
- Purity : The manufacturing process allows inclusions to be controlled, making the stones often clearer and purer than their natural counterparts.
- Transparency : Synthetic corundum can be manufactured to achieve high levels of transparency, which is ideal for high quality jewellery.
Synthetic corundum manufacturing process
The creation of synthetic corundum involves several advanced methods. The two most common techniques are :
- Verneuil method : This technique, also known as flame fusion, involves melting pure aluminium oxide powders at high temperature. The stone formed is then shaped into the desired gem.
- Hydrothermal method : This process involves dissolving minerals in an aqueous environment at high pressure and temperature, encouraging the growth of crystals. This method produces stones with characteristics very similar to those of natural stone.
Applications of synthetic corundum in luxury jewellery
Synthetic corundum is widely used in the aluminium luxury jewellery for the creation of a number of precious pieces, including :
- Rings : Rings adorned with rubies and synthetic sapphires are highly prized for their brilliance and durability.
- Necklaces : Necklaces set with synthetic corundum are key pieces in fine jewellery collections.
- Earrings : Earrings with synthetic corundum stones add a touch of elegance and sophistication.
- Bracelets : Bracelets encrusted with rubies or synthetic sapphires are refined, long-lasting fashion accessories.
Frequently asked questions about synthetic corundum
What is the difference between natural and synthetic corundum?
The main difference lies in their origin. Natural corundum is extracted from the earth, while synthetic corundum is manufactured in laboratories. Although their physical and chemical properties are similar, synthetic corundum can be produced with fewer inclusions and more uniform colours.
Is synthetic corundum as durable as natural corundum?
Yes, synthetic corundum is just as durable as natural corundum. With a hardness of 9 on the Mohs scale, it is extremely resistant to scratches and wear.
Why choose synthetic corundum for luxury jewellery?
Synthetic corundum offers a more affordable alternative while retaining the beauty and durability of natural corundum. It also provides greater uniformity of colour and purity, which is ideal for creating high-quality jewellery.
Are synthetic corundum stones less precious than natural stones?
Although generally less expensive, synthetic corundum stones are not necessarily less valuable in terms of beauty and durability. Their value depends on the quality of manufacture and market demand.
In conclusion, synthetic corundum is a manufactured gemstone that offers many advantages for luxury jewellery, particularly in terms of durability, purity and uniformity. Whether for rings, necklaces, earrings or bracelets, synthetic corundum is a wise choice to enhance any high-end jewellery collection.