Blue Gemstones
Explore our curated collection of blue gemstones, the most beloved colour family in fine jewellery across every era and culture. From the velvety depths of Kashmir sapphire to the serene clarity of aquamarine, blue gemstones offer timeless elegance and extraordinary variety in every shade imaginable.
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See Blue Gemstones in the Light They Deserve
See Blue Gemstones in the Light They Deserve
No two blue stones are alike. The difference between a steel-blue sapphire and a velvety cornflower is something that must be seen to be understood. Visit us at Hatton Garden for a private appointment and let our blue gem specialists walk you through our entire collection, from aquamarines to exceptional sapphires, with no pressure and no rush.
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Sapphire, Aquamarine And Beyond: The Blue Gem World
Blue gemstones represent the broadest and most varied colour family in the gem world. Blue sapphire, a variety of corundum coloured by iron and titanium, is the most iconic and consistently in demand. Aquamarine brings serene, sea-blue clarity to the beryl family and is beloved for its cool transparency. Tanzanite, found only in the foothills of Kilimanjaro, offers a unique blue-violet that rivals sapphire at a more accessible price. Blue spinel and blue tourmaline round out this extraordinary and endlessly versatile colour range.
Tone, Saturation & the Geology Behind the Blue
Blue sapphire at hardness 9 is the gold standard for blue gemstones in fine jewellery. Aquamarine rates 7.5–8, while tanzanite sits at 6–6.5 (best suited to protected settings for rings). The most prized blues exhibit strong, pure saturation without grey or green modifiers dulling the tone. Kashmir sapphires are the rarest and most historically significant; Sri Lankan, Burmese, and Madagascar stones are also highly regarded by collectors. Aquamarine is primarily sourced from Brazil and Mozambique.
Blue Gemstones- FAQ's
What is the most valuable blue gemstone?
What is the most valuable blue gemstone?
Kashmir sapphire is widely regarded as the most valuable, known for its velvety cornflower-blue colour and extreme rarity. Fine examples regularly exceed ruby and emerald at auction.
Is tanzanite durable enough for an engagement ring?
Is tanzanite durable enough for an engagement ring?
Tanzanite is relatively soft at 6–6.5 on the Mohs scale. It suits pendants and earrings best, or engagement rings in a protective bezel or halo setting worn with some care.
What is the difference between blue sapphire and blue topaz?
What is the difference between blue sapphire and blue topaz?
Blue sapphire is far rarer, harder, and more valuable. Blue topaz is very affordable and widely available, making it a budget-friendly option but a less prestigious one.
Can blue gemstones be worn year-round?
Can blue gemstones be worn year-round?
Absolutely. Blue is one of the most versatile and universally flattering colours in jewellery, working beautifully across all seasons, occasions, and metal types.
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