Tanzanite Quartz Duet Ring

The colour of tanzanite. The confidence of a statement ring.

Deep violet blue meets bold architectural design. A 10 mm square stone sits beside a sleek marquise, both in the mesmerising blue-purple shade that has made tanzanite one of the most coveted gemstones in the world.

The difference is the stone. These are quartz, chosen for their tanzanite colour, so you get that rich, dreamy hue in a ring that's more affordable and more durable for everyday wear.

Wear it and you'll feel striking and original, someone with an eye for something different.

• Tanzanite colour: Two violet blue quartz stones in a 10 x 10 mm square and a 10 x 4 mm marquise

• Original design: Our Duet toi et moi ring, with clean, architectural lines

• Generous sterling silver: A substantial 13 g setting with a polished, high-end feel

• Made to wear: Quartz is harder than tanzanite, so it's better suited to everyday rings

Why choose a tanzanite alternative?

Real tanzanite is mined in just one small area of northern Tanzania, near Mount Kilimanjaro. That rarity makes it expensive, especially at this size. A square tanzanite this large could cost thousands of dollars on its own.

Tanzanite is also fairly soft for a ring, at 6 to 6.5 on the Mohs hardness scale. Quartz rates 7, so it stands up better to daily wear.

Our tanzanite colour quartz gives you the same beautiful violet blue, at a price that makes sense for a ring you'll actually wear.

An unusual statement ring

The Duet isn't a classic solitaire. Its square and marquise stones sit together like a modern sculpture, creating an asymmetric silhouette that looks bold from every angle. The thick silver setting shows from the side and back, so it feels as good as it looks.

Explore the Duet Collection

The Duet also comes in rich rhodolite garnet and sparkling white topaz. Explore the full Duet Collection.

Details

• Gemstones: Tanzanite colour quartz

• Stone sizes: 10 x 10 mm square and 10 x 4 mm marquise

• Cut: Faceted

• Metal: Sterling silver

• Weight: About 13 g

• Sizes: 6 - 13

Find your size

Read our Size Guide, and our article on how to choose the best ring size.

Care

• Put your ring on after lotion, perfume and hairspray.

• Remove it before swimming, cleaning or exercising.

• Wipe the stones with a soft, damp cloth. Avoid ultrasonic cleaners and harsh chemicals.

• Polish the silver with a Desiderate silver jewellery polishing cloth.

FAQs

Is this ring real tanzanite?
No. The stones are quartz with a beautiful tanzanite colour. They give you the violet blue look of tanzanite at a more affordable price.

What is tanzanite quartz?
It's quartz with a violet blue colour like tanzanite. It's a different gemstone from tanzanite, which is a rare blue variety of the mineral zoisite.

Why is tanzanite so expensive?
Tanzanite is found in only one place in the world, a small area of northern Tanzania. Large, richly coloured stones are rare, so prices rise quickly with size.

Is tanzanite too soft for a ring?
Tanzanite can be worn in rings with care, but it's relatively soft. Quartz is harder, which makes this ring a practical choice for everyday wear.

What stone is blue and purple?
Tanzanite is the best known, along with some sapphires and iolite. This ring uses quartz in a tanzanite colour.

What is a toi et moi ring?
It's French for "you and me". A toi et moi ring sets two stones side by side, and the Duet is our modern take on the style.