When it comes to gemstones, there are several popular choices that captivate with their vibrant colours and unique qualities. In this article, we will explore the differences between rubies, pink sapphires, blue sapphires, emeralds, and tanzanite, including their origins and whether they are treated to enhance their colour.
Rubies
Rubies are known for their rich red colour, which is caused by the presence of chromium in the crystal structure. The most sought-after rubies come from Myanmar (formerly Burma), where they have been mined for centuries. Rubies from other locations, such as Thailand, Sri Lanka, and Mozambique, are also highly valued. It's important to note that rubies are typically not treated to enhance their colour, as their natural hue is already highly desirable.
Pink Sapphires
Pink sapphires, as the name suggests, display a range of pink hues. These gemstones are a variety of corundum, the same mineral that forms rubies. Pink sapphires can be found in various locations around the world, including Sri Lanka, Madagascar, and Myanmar. While some pink sapphires occur naturally, others may undergo heat treatment to intensify their colour. This treatment is widely accepted in the industry and does not affect the gemstone's value.
Blue Sapphires
Blue sapphires are perhaps the most well-known and coveted of all sapphires. They are also a type of corundum, with the blue colour being caused by the presence of iron and titanium. The finest blue sapphires come from Kashmir, a region in the Himalayas. Other notable sources include Sri Lanka, Myanmar, and Madagascar. While some blue sapphires occur naturally, many undergo heat treatment to enhance their colour and clarity. This treatment is considered standard practice and does not diminish the gemstone's value.
Emeralds
Emeralds are famous for their lush green colour, which is caused by the presence of chromium and vanadium. The majority of emeralds come from Colombia, where they have been mined for centuries. Other significant sources include Zambia, Brazil, and Zimbabwe. It's worth noting that emeralds are often treated with oils or resins to improve their clarity and appearance. This treatment is widely accepted in the industry and does not affect the gemstone's value.
Tanzanite
Tanzanite is a relatively new gemstone that was discovered in Tanzania in the 1960s. It is prized for its striking blue-violet color, which is caused by the presence of vanadium. Tanzania remains the primary source of tanzanite, making it a rare and valuable gemstone. Tanzanite is typically heat-treated to enhance its colour and remove any brownish hues. This treatment is widely accepted and does not impact the gemstone's value.
In conclusion, each of these gemstones possesses its own unique qualities and allure. Rubies, pink sapphires, blue sapphires, emeralds, and tanzanite all offer a range of stunning colours and are sourced from various locations around the world. While some gemstones may undergo treatment to enhance their colour, these treatments are widely accepted and do not diminish their value. Whether you're drawn to the fiery red of a ruby, the delicate pink of a sapphire, the deep blue of a sapphire, the lush green of an emerald, or the mesmerizing blue-violet of tanzanite, each gemstone is sure to make a statement in any jewellery piece.
