Rubies are precious gemstones known for their vibrant red colour and exceptional hardness. They are a variety of the mineral corundum, with their red colour attributed to the presence of chromium. Rubies are one of the most valuable gemstones in the world and have been highly prized for centuries.
Here are some key characteristics and facts about rubies:
Colour: Rubies are most commonly associated with a rich, deep red colour. The intensity of the red hue determines the value of the stone, with the finest rubies exhibiting a vivid, pure red colour. However, rubies can also occur in various shades of pinkish-red to purplish-red.
Hardness: Rubies are extremely hard gemstones, ranking 9 on the Mohs scale of mineral hardness. This makes them second only to diamonds in terms of hardness. Their hardness contributes to their durability, making them suitable for various types of jewellery.
Origin: Rubies are found in several countries around the world, including Myanmar (formerly Burma), Thailand, Sri Lanka, Madagascar, Mozambique, and Tanzania. Each source can produce rubies with unique characteristics and colours.
Size: Rubies come in a wide range of sizes. Large rubies are rare and highly valued, and their price per carat increases exponentially with size. Therefore, large rubies can be significantly more valuable than smaller ones.
Symbolism and History: Rubies have a rich history and are associated with various cultural and historical significances. In many cultures, they are considered the "king of gemstones" and symbolize passion, love, courage, and vitality. Ancient civilizations believed rubies had protective powers and brought good fortune.
Treatments: It's common for rubies to undergo treatments to enhance their colour and clarity. Heat treatment is the most common and accepted method. This process involves heating the gemstone to high temperatures to improve its colour and transparency. However, it's important to disclose any treatments performed on a ruby when buying or selling it.
Value: Rubies are valued based on several factors, including colour, clarity, carat weight, and cut. The most valuable rubies have a deep, intense red colour with excellent transparency and minimal inclusions. In the world of gemstones, top-quality rubies can sometimes command higher prices per carat than diamonds.
Uses: Rubies are primarily used in jewellery, such as rings, necklaces, bracelets, and earrings. Due to their durability, they can withstand daily wear and tear. Rubies are also occasionally used in high-end watches and as decorative elements in various luxury items.
When purchasing a ruby, it's important to consider factors such as the gemstone's quality, certification, and ethical sourcing. Consulting with a reputable gemmologist or jeweller can help you make an informed decision and ensure you acquire a genuine and beautiful ruby.