A Guide to Sapphires, Emeralds, and Other Non-Diamond Stones

Diamonds may be the traditional choice for engagement rings and fine jewellery, but non-diamond gemstones have been captivating hearts for centuries with their vibrant colours, unique properties, and rich histories. From the deep blues of sapphires to the lush greens of emeralds, these gemstones offer an alternative to the classic diamond, allowing you to express individuality and style. Here's an in-depth guide to some of the most popular non-diamond stones.

 

Sapphires: Timeless Elegance in Every Hue

Sapphires are among the most sought-after gemstones, celebrated for their exceptional durability and vibrant colours. While blue sapphires are the most iconic, these stones come in a rainbow of hues, including pink, yellow, green, and even white.

One of the most famous sapphires is the deep blue variety from Kashmir, known for its velvety, saturated colour. Sapphires from Sri Lanka (Ceylon sapphires) are prized for their lighter, pastel-like hues, while Australian sapphires often have a deeper, inky blue. Beyond aesthetics, sapphires rate 9 on the Mohs hardness scale, making them ideal for everyday wear in engagement rings and other fine jewellery.

When choosing a sapphire, pay attention to colour saturation, clarity, and cut. A well-cut sapphire will maximise its brilliance and highlight its natural beauty. Heat treatment is a common and accepted practice to enhance colour and clarity, so be sure to ask about any treatments your stone has undergone.

 

 

Emeralds: The Lush Green Jewel of Royalty

Emeralds are synonymous with luxury and sophistication, thanks to their rich green hue and association with royalty. They are a variety of the mineral beryl and owe their color to trace amounts of chromium and vanadium. Emeralds have a slightly lower Mohs hardness rating (7.5-8) than sapphires, making them slightly more prone to scratches and chips. However, their vivid color and unique inclusions—often called the "jardin" or garden—make them highly desirable.

Unlike diamonds, emeralds are often "included," meaning they have visible internal characteristics. These inclusions are not seen as flaws but rather as part of the stone's natural character. When purchasing an emerald, prioritise colour over clarity; a vivid, evenly distributed green is more valuable than a perfectly clear stone with a weaker colour.

To maintain the beauty of an emerald, proper care is essential. Avoid ultrasonic cleaners, and opt for gentle hand-cleaning with warm water and a soft cloth. Most emeralds on the market have been treated with oils or resins to improve clarity, so it’s essential to handle them with care.

 

 

Rubies: The King of Gemstones

Rubies, with their fiery red hues, symbolise passion, love, and vitality. A variety of the mineral corundum—like sapphires—rubies owe their colour to trace amounts of chromium. The most coveted rubies are "pigeon's blood" red, a deep, vibrant shade with a hint of blue undertone.

Rubies are incredibly durable, ranking 9 on the Mohs scale, making them perfect for rings, necklaces, and other jewellery meant to be worn daily. Similar to sapphires, many rubies undergo heat treatment to enhance their colour and clarity. When buying a ruby, look for stones with vivid colour saturation and minimal inclusions.

 

Aquamarine: The Calm of the Ocean

 

Aquamarine, another variety of beryl, is cherished for its serene blue to greenish-blue hues. Its name, derived from the Latin "aqua marinus" or "water of the sea," perfectly captures its tranquil beauty. With a Mohs hardness rating of 7.5-8, aquamarine is suitable for most types of jewelry.

This gemstone’s pastel tones make it a versatile and elegant choice for modern designs. Look for stones with high clarity and an even, saturated colour. Aquamarine is often free of inclusions, making it one of the cleanest gemstones available. Its subtle hue pairs beautifully with white gold, platinum, or rose gold settings.

 

Spinel: The Underrated Beauty

Spinel is a rising star in the world of fine jewellery. Often mistaken for rubies or sapphires in historical crowns and royal collections, spinel offers a stunning array of colours, including red, pink, purple, and blue. With a Mohs hardness of 7.5-8, spinel is durable and suitable for everyday wear.

One of spinel's greatest appeals is its natural beauty. Unlike many other gemstones, spinel is rarely treated, making it an excellent choice for those seeking untreated stones. Its affordability compared to rubies or sapphires makes it a hidden gem for savvy buyers.

 

 

Other Notable Gemstones

• Morganite: A soft pink variety of beryl, perfect for romantic and feminine designs.

• Tanzanite: A rare, violet-blue gemstone found only in Tanzania, valued for its unique colour.

• Garnet: Known for its deep red hues, garnet also comes in green (tsavorite) and orange (spessartite).

• Tourmaline: A versatile gemstone available in nearly every colour, including bi-coloured and tri-coloured varieties.

 

 

Choosing the Right Stone for You

Non-diamond gemstones offer a world of possibilities, from vibrant colours to unique characteristics that make each piece truly one of a kind. Whether you’re drawn to the regal allure of emeralds, the fiery passion of rubies, or the serene beauty of aquamarine, these gemstones allow you to tell your story through your jewelry. When selecting a stone, consider your lifestyle, personal style, and the care it requires to ensure your piece remains a cherished treasure for years to come.