Hardly any gemstone stands for passion as much as the ruby. Its strong red makes it a classic for rings, earrings and pendants – and because it is very durable, it also suits jewellery that is worn every day.
What is a ruby?
The ruby is the red variety of the mineral corundum. The sapphire belongs to the same family: chemically both are the same, and the colour decides the name. Traces of chromium create the typical red. The purer and stronger the red, the more valuable the stone. Important deposits are found in Myanmar, Mozambique and Thailand, among other places.
Hardness and everyday wear
On the Mohs hardness scale the ruby reaches 9 – only the diamond is harder. Scratches from dust or hard surfaces are therefore rare, which makes the ruby an ideal stone for rings. A good setting also protects it from knocks against edges.
Treated rubies
Many rubies are heated to improve their colour and clarity. This treatment has long been common in the trade and is permanent. Rubies whose fractures have been filled with glass are different: they are considerably cheaper but more delicate. Feel free to ask how a stone has been treated when you buy it.
Care
Clean ruby jewellery with lukewarm water, a little mild soap and a soft brush – including the back of the stone, so that plenty of light can enter it again. Glass-filled rubies should not go into an ultrasonic cleaner and should be kept away from acids.
The ruby as a birthstone
The ruby is the birthstone for July, which also makes it a popular personal gift.
We are happy to show you rings with ruby and other coloured gemstones in our shop at Landstraße 91 in Linz. You can find an overview among our rings and more tips in the Jewellery & Watch Guide.
