Mohs Scale

Choosing the Right Gemstone for Your Jewellery

The Mohs Scale of Hardness is a key measure used in the jewellery industry to determine the durability and scratch resistance of gemstones. Ranging from 1 (the softest) to 10 (the hardest), the scale helps jewellers and customers alike understand which stones are best suited for everyday wear and which require more care.

At the top of the scale, diamonds rank at 10, making them the hardest natural substance and an excellent choice for engagement rings and everyday jewellery. Sapphires and rubies follow closely behind at 9, offering both beauty and durability. Emeralds (7.5–8) and topaz (8) are also popular choices but require more careful handling. Softer gemstones, such as opal (5.5–6.5) or pearls (2.5–4.5), are best suited for special occasion pieces or protective settings to prevent damage.

Understanding the Mohs Scale helps you select the perfect gemstone for your lifestyle, ensuring your jewellery remains as stunning as the day you first wore it. If you need advice on choosing the right stone, our experts at Robert’s Fine Jewellery are always happy to help.