Jewellery Guide

The world of gemstones

Colour, rarity and durability — what to know before choosing a coloured stone.

Popular gemstones

Ruby Deep red, one of the hardest gemstones. A symbol of passion — the July birthstone.
Emerald Rich green with natural inclusions called “jardin”. Handle with a little care — the May birthstone.
Blue sapphire Velvety blue and very durable, perfect for everyday rings — the September birthstone.
Pearl Soft lustre formed in molluscs. Wear it often — pearls love skin contact — the June birthstone.
Amethyst Purple quartz, affordable and striking — the February birthstone.
Tanzanite Blue-violet, found only in Tanzania. Best in earrings and pendants.

Hardness (Mohs scale)

Higher numbers resist scratches better.

GemstoneHardnessEveryday rings?
Diamond10Yes
Ruby & sapphire9Yes
Emerald7.5 – 8With care
Amethyst7With care
Tanzanite6 – 7Best for earrings & pendants
Pearl2.5 – 4.5Best for earrings & pendants
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Keep exploring

Diamond Guide Cut, colour, clarity and carat — what they mean and how to choose a diamond you will love. Metal Guide Gold purity, colours, platinum and hallmarking — choose the right metal for your jewellery. Lab-grown & Natural Diamonds Both are real diamonds. Here is how they differ — and how to choose. Diamond Shapes From round brilliant to pear and emerald cut — find the shape that feels like you. Size Guide Find your ring, bangle and necklace size at home in minutes. How to Wear & Style Stacking, layering and pairing — simple ideas to style fine jewellery every day. Jewellery Care Keep your jewellery brilliant for generations with a few simple habits.