Tanzanite Rings – Handcrafted Blue-Violet Gemstone & Diamond Jewellery | Finediam, Hatton Garden

There is no gemstone quite like tanzanite. Found in only one place on earth — a small area of northern Tanzania near the foothills of Mount Kilimanjaro — tanzanite is one of the rarest and most extraordinary gemstones in the world. Its remarkable trichroic quality means it displays different colours depending on the angle from which it is viewed: a rich blue-violet from one direction, a deep sapphire blue from another, and a warm burgundy from a third. This unique optical phenomenon, combined with tanzanite’s exceptional clarity and extraordinary colour saturation, makes it one of the most sought-after gemstones in fine jewellery today.

At Finediam, we celebrate tanzanite’s extraordinary beauty through our handcrafted collection of tanzanite rings, each one made to order in our Hatton Garden workshop using only the finest certified tanzanites and precious metals. Whether you are searching for a classic tanzanite solitaire, a halo design surrounded by brilliant-cut diamonds, or a bold contemporary statement piece, our tanzanite ring collection offers something truly extraordinary.

The Tanzanite – One of the World’s Rarest Gemstones

Tanzanite was discovered in 1967 and introduced to the world by Tiffany & Co., who named it after its country of origin. It belongs to the zoisite mineral family and owes its extraordinary blue-violet colour to the presence of vanadium. The finest tanzanites display a rich, deeply saturated blue-violet that rivals the finest sapphires in intensity and beauty — but with a unique warmth and depth that is entirely its own.

Tanzanite is estimated to be approximately 1,000 times rarer than diamond, found only in a single mining area of just a few square kilometres. This extraordinary rarity, combined with its exceptional beauty, makes tanzanite one of the most prized and valuable gemstones available today — and a truly special choice for a ring that is meant to be treasured for a lifetime.

Tanzanite rates 6.5–7 on the Mohs scale of hardness. While slightly softer than sapphire or ruby, a tanzanite ring set in a protective bezel or halo setting is perfectly suited to regular wear. Our Hatton Garden team can advise on the best setting style to protect your tanzanite while showcasing its extraordinary colour.

Our Tanzanite Ring Collection

• Tanzanite Solitaire Rings – A single tanzanite, set simply and elegantly to let the stone’s extraordinary colour and trichroic quality speak for itself.
• Tanzanite Halo Rings – A tanzanite centre stone surrounded by a halo of brilliant-cut diamonds, amplifying the stone’s colour and adding exceptional sparkle.
• Tanzanite & Diamond Cluster Rings – Multiple tanzanites and diamonds arranged in an intricate cluster setting, creating a rich, jewel-like effect that is both bold and sophisticated.
• Tanzanite Three-Stone Rings – A tanzanite flanked by two diamonds or complementary gemstones, representing the past, present, and future — a deeply meaningful choice for an engagement or anniversary ring.
• Tanzanite Cocktail Rings – Bold, statement-making designs that showcase tanzanite’s extraordinary colour in the most dramatic way possible.

Tanzanite Engagement Rings

A tanzanite engagement ring is one of the most distinctive and meaningful choices a couple can make. For those who want something beyond the conventional diamond solitaire — a ring that is genuinely rare, deeply personal, and breathtakingly beautiful — tanzanite is an inspired choice. Its extraordinary rarity makes it a fitting symbol of a love that is truly one of a kind.

Explore our dedicated tanzanite engagement rings collection for designs specifically crafted for proposals and engagements, or speak to our Hatton Garden team about creating a bespoke tanzanite engagement ring tailored entirely to your vision.

Tanzanite vs Blue Sapphire

Both tanzanite and blue sapphire are celebrated blue gemstones, but they have quite different characters. Blue sapphire offers a deep, rich, highly saturated blue that is bold and intense. Tanzanite, by contrast, displays a unique blue-violet that shifts between blue, violet, and burgundy depending on the light and angle — a quality that gives it a depth and complexity that no other gemstone can match.

If you are drawn to blue gemstone rings, our blue sapphire rings and sapphire engagement rings collections offer a beautiful range of designs to compare. Both stones are exceptional — the right choice simply depends on the colour and character that speaks to you.

Metal Options

• 9K Yellow Gold – The warm tone of yellow gold creates a beautiful contrast with tanzanite’s cool blue-violet.
• 9K White Gold – Cool and contemporary, white gold enhances tanzanite’s blue tones.
• 9K Rose Gold – The warm blush of rose gold provides a romantic contrast to tanzanite’s cool blue-violet.
• 18K Yellow Gold – Richer in colour and higher in purity, the gold of choice for those who want the finest.
• 18K White Gold – Sleek and sophisticated, ideal for a modern, high-fashion look.
• 18K Rose Gold – Luxuriously warm, with a deeper, more intense blush than 9K.
• 950 Platinum – The most prestigious and durable of all precious metals, naturally white and hypoallergenic.

Tanzanite Rings with Diamonds

The combination of tanzanite and diamonds is one of the most spectacular pairings in fine jewellery. All of our diamond-set tanzanite rings are available with your choice of natural diamonds (F colour, SI clarity) or lab-grown diamonds (D colour, VVS clarity). Browse our lab-grown diamond engagement rings and mined diamond engagement rings for a sense of the diamond quality we bring to every piece.

Hallmarked, Certified & Guaranteed

Every tanzanite ring from Finediam is hallmarked at the UK Assay Office, certifying the purity of the metal and guaranteeing its quality. We back every piece with our comprehensive lifetime warranty, complimentary resizing service, and 30-day no-quibble returns policy. Free UK delivery and free insured worldwide delivery are included on every order.

Bespoke Tanzanite Rings

Our Hatton Garden craftspeople can create a fully bespoke tanzanite ring to your exact specifications — your choice of stone shape, metal, and setting style — with no additional design fee and a typical turnaround of 10–15 working days.

Shop Tanzanite Rings at Finediam

Explore the full collection above, or browse our tanzanite engagement rings and blue sapphire rings collections to discover more. Whatever the occasion, whatever the budget, we have a tanzanite ring that is perfect for you.