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Cocktail Rings

Tanzanite & Diamond Cocktail Ring

Discovered in the 1960s, Tanzanite is found in only one place in the world. It is prized for its colour, which varies from bright blue to warm violet. This cocktail ring has been designed and crafted around a certified 7.46 carat oval cut tanzanite, selected for its rich blue hue.

The design is floral and delicate, with smaller oval cut diamonds creating a scalloped effect around the central gemstone, surrounded in turn by round brilliant cut diamonds. Split shoulders, also set with round brilliant cut diamonds, add further intricate detail.

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Inside Prestons

If you are looking for advice and guidance from our team on how to select your ring, Inside Prestons offers articles, features and interviews for you to enjoy and explore.

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Bespoke Design

Our bespoke design service allows our clients to design, create or recommission truly unique pieces of jewellery, developed and crafted at our workshop in London, 8 Ely Place. Every piece that leaves the house is accompanied by a ‘Made in London’ seal as a mark of its quality and craftsmanship.

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Explore The Collection Further

Our dress ring collections include an array of hand-chosen styles, from classic to contemporary. Here, a selection of alternative styles based on your current selection.

Discover Prestons

Our showrooms in Wilmslow, Guildford, Norwich and Leeds are always here to help and continue to offer the advice and guidance that has been our hallmark since 1869.

Our Showrooms

Over the years, generations of families have become customers of Prestons, and many have gone on to become friends. Today, our teams look forward to welcoming you to our showrooms in Wilmslow, Guildford, Norwich and Leeds.

Prestons Guildford


Our Guildford showroom, which is now located on the opposite side of the high street, is designed to reflect the architectural merit of the Edwardian building it now occupies. The store features newly extended spaces dedicated to the fine watch houses it showcases, alongside a comfortable lounge to allow our clients to explore our bridal and fine jewellery collections. Explore This Showroom

Prestons Wilmslow


Located in the heart of Wilmslow, this showroom features a selection of spaces dedicated to the fine watch houses it showcases. Of course, the bridal collections Prestons have always been famous for remain a prominent feature of the store and surround the famous Aquarium Bar which sits at its centre. Explore This Showroom

Rolex by Prestons, Leeds


This showroom, located in Victoria Gate, features extensive Rolex showcases alongside a discrete VIP lounge. Every element of the interior design radiates the values of the Rolex crown: excellence, precision and attention to detail from louvre walls in walnut, to the careful calibration of colours and patterns within the fittings and furnishings. Explore This Showroom

Prestons Norwich


Located on the historic Norwich high street, Prestons Norwich has been expanded and redesigned to reflect the character of the building it has occupied for over 150 years. The showroom features collections by Patek Philippe, Rolex and TUDOR alongside our fine jewellery collections. Explore This Showroom
Guildford showroom