Lute Diamonds: Certified Tanzanite Specialists Since 2006

Since 2006, Lute Diamonds has handcrafted certified diamond and Tanzanite jewellery from our workshop in Kimberley, South Africa — one of the world's most storied diamond regions. We work directly with trusted gemstone suppliers to source genuine Tanzanite, one of the rarest gemstones on earth, found in only one location near Mount Kilimanjaro, Tanzania.

Every piece we create is handcrafted by our in-house artisans, combining ethically sourced 9k, 14k and 18k gold with certified natural gemstones. Our focus stays on quality over volume — each ring and pendant is finished individually, which is why customers across the United Kingdom and Europe choose Lute Diamonds when they want a piece that feels genuinely considered rather than mass-produced.

Our Tanzanite Jewellery Collection

Lute Diamonds offers a growing collection of Tanzanite jewellery, including Tanzanite engagement rings and Tanzanite pendants, with pieces designed to be paired with diamond accents for extra brilliance. Whether you're drawn to a striking cushion-cut Tanzanite ring or a pear-shaped Tanzanite piece, our collection is built around rarity, craftsmanship and certified authenticity.

If you are looking to buy Tanzanite engagement rings in the UK, our collection is delivered securely across the United Kingdom and Europe, with every certified piece accompanied by gemstone documentation confirming its origin and quality.

Understanding Tanzanite Colour Grading

Tanzanite is graded primarily on the depth and saturation of its blue-violet colour, alongside its clarity and cut. Gemstones range from lighter, more affordable blue-violet tones through to deep, highly saturated stones, which are considerably rarer and more valuable. As with diamonds, a Tanzanite's overall worth comes down to a combination of colour intensity, clarity, cut precision and carat weight — which is why buying from a source that provides proper certification matters just as much for Tanzanite as it does for diamonds.

Certified Quality You Can Trust

Every certified Tanzanite jewellery piece in the Lute Diamonds collection is backed by authenticity documentation from recognised gemological laboratories, including EGLSA (European Gemological Laboratory South Africa) and, for select diamonds, GIA (Gemological Institute of America). This gives UK and European customers full confidence in the origin, carat weight and quality of the gemstone they are buying, without having to take it on trust alone.

Handcrafted, Not Mass-Produced

Unlike large-scale gemstone retailers, every Lute Diamonds piece is designed and finished by hand in our South African workshop. This means small design variations are part of the character of each piece, and our team is able to make adjustments — such as resizing or metal changes — that aren't possible with factory-produced jewellery. Browse our full Wedding Rings collection to see this craftsmanship across our diamond pieces too.

Custom & Bespoke Tanzanite Jewellery

Looking for something entirely your own? Our team can work with you to design a bespoke Tanzanite jewellery piece, from a one-of-a-kind engagement ring to a custom pendant setting built around a specific stone. Get in touch to discuss your vision, or read more About Us and our craftsmanship story.

FAQs

1. Where can I buy genuine Tanzanite jewellery in the UK?
Lute Diamonds ships certified Tanzanite jewellery directly to customers across the United Kingdom, with secure, tracked delivery and full authenticity documentation included.

2. What certification should Tanzanite jewellery have?
Genuine Tanzanite jewellery should come with documentation from a recognised gemological laboratory confirming the stone's colour grade, clarity and carat weight. Lute Diamonds' certified Tanzanite jewellery pieces are graded by EGLSA or GIA.

3. How is Tanzanite colour graded?
Tanzanite is assessed on the depth and saturation of its blue-violet colour, alongside clarity and cut. Deeper, more saturated stones are rarer and typically more valuable than paler tones.

4. Is Tanzanite a good investment?
Tanzanite's single-source location makes it genuinely rare, though it is generally chosen for its unique beauty rather than as a financial investment. Diamonds tend to hold resale value more predictably over time — see our Wedding Rings collection for certified diamond options.

5. Does Lute Diamonds ship Tanzanite jewellery to Europe as well as the UK?
Yes, Lute Diamonds delivers certified Tanzanite jewellery across both the United Kingdom and Europe with secure, tracked shipping.

6. What is the difference between natural and lab-created gemstones?
Natural gemstones are mined from the earth, while lab-created (synthetic) gemstones are grown under controlled conditions and share the same chemical structure. Lute Diamonds clearly discloses when a piece features a lab-created stone, so customers always know exactly what they are buying.