Gemstones
* some fun facts on different gemstones used. For more information please contact us!
* some fun facts on different gemstones used. For more information please contact us!
Artistry in action
Did you know Sapphires come in every colour of the rainbow?
We love using Sapphires for our Helia collection because they are the hardest stones after diamonds, Mohs 9, and have incredible varieties of colour. Some colours are rarer to find than others, hence they might have slightly different shade in colour, even though we try to match as much as possible.
Artistry in action
Did you know that emerald, aquamarine, and morganite are all part of the beryl family? Their colours differ because of trace elements within the same mineral structure. In emerald, chromium and/or vanadium are responsible for its rich green to bluish green tone.
Admired for its vivid saturation and natural jardin inclusions, emerald reveals a unique internal landscape within each stone. With a hardness of 7.5 to 8 on the Mohs scale, it is one of the world’s most prized gemstones. Notable sources include Colombia, Zambia, Brazil, and Zimbabwe.
Uncompromising standards
The hardest natural material at Mohs 10, diamond is prized for its exceptional brilliance, fire, and timeless versatility. Quality is assessed through the 4Cs: cut, colour, clarity, and carat weight. White diamonds are graded for colour from D (colourless) to Z, and for clarity from IF (Internally Flawless) through VVS, VS, SI, and I, depending on the visibility of inclusions and blemishes.
Artistry in action
A richly varied gemstone family found in an exceptional range of colours, from velvety reds to vivid greens and luminous oranges.
Particularly prized are Mandarin garnet for its vibrant orange brilliance, and demantoid garnet, a rare green variety renowned for its remarkable fire and characteristic horsetail inclusions in some stones.
Made to last
The red variety of corundum, treasured for its vivid colour, durability, and exceptional brilliance. At Mohs 9, ruby is one of the hardest gemstones used in jewellery, making it an enduring choice for fine pieces. The finest stones are especially valued for their rich, vibrant red, often described as pigeon’s blood.
Notable sources include Myanmar, Mozambique, Madagascar, Thailand, and Sri Lanka.
A natural gemstone, not to be confused with synthetic cubic zirconia, zircon has been admired for centuries for its brilliance, rainbow fire, and the visible “doubling” caused by strong double refraction. Found in a rich spectrum of colours, from blue and golden yellow to red, green, brown, and colourless, it is a gemstone of remarkable optical liveliness.
Colorless zircon was once widely used as a diamond substitute in the early 1900s, which helped create the misunderstanding that it is an imitation stone, when in fact it is a genuine mineral found in nature. With a hardness of 6 to 7.5 on the Mohs scale.
A rare blue to violet variety of zoisite, found only in northern Tanzania and admired for its velvety colour and subtle shifts between blue, violet, and burgundy in different lighting directions. Mohs 6–7; most tanzanite is heat-treated to reveal its signature blue-violet hue, so it is best worn with a little care.
Cherished for its soft, floating glow known as adularescence, which seems to move across the surface as the stone catches the light. The finest moonstones are colourless to translucent with a luminous blue sheen, and are best suited to more mindful wear.
A fresh, vibrant gem of the mineral olivine, instantly recognisable for its yellowish green colour, caused naturally by iron within the stone itself. Bright, lively, and often very clean in appearance, peridot brings a distinctive clarity and warmth to jewellery.