Excellence and Experience

Welcome to ASSAY

25 years of experience to offer the finest jewelry at the fairest prices.

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DIAMONDS

Shine Brighter

Explore our Selection of Diamond Pieces

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Shop Markdowns

Visit our selection of below retail pieces.

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Brand Jewelry - Shop Now

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Shop Vintage - Shop Now

1-6 Month Interest Free Installment Plans - More Info

Bracelets

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Rings

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Necklaces

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Earrings

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Best Sellers

Shop our best sellers and see what everyone is into this season.

Best Sellers

See all the latest best sellers.
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Classic Riviera Natural Blue & White Diamond Box Tennis Bracelet in 18K White Gold | 7.25" - 1.7mm £3,257.00 GBP £5,863.00 GBP
18k Solid Gold Natural Colombian Emerald and 3 Round Diamonds On Top Pendant Necklace £2,252.00 GBP £2,764.00 GBP
Quick Buy
2.5mm Tiny Natural Diamond Stud Earrings in 925 Sterling Silver From £25.00 GBP
18K Solid Gold 0.80 Carat Natural 2 Stone Bezel Set Diamond Ring £2,420.00 GBP £3,350.00 GBP
18K White Gold 1.34 Carat Diamond Tennis Bracelet | 7 inches - 2mm £2,094.00 GBP £3,350.00 GBP
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3mm-4mm Colombian Emerald Square-Cut Stud Earrings in 18k Yellow Gold From £418.00 GBP
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14k Solid Yellow Gold Rope Chain 18 inch/20 inch 3mm thick gold necklace From £1,155.00 GBP
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Custom Letter Name Necklace in 14k Solid Gold With Integrated Letters From £126.00 GBP

New Arrivals

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Vintage 4.50 CTTW Old European Cut Diamond Three-Stone Art Deco Engagement Ring in Platinum £71,184.00 GBP £77,884.00 GBP
Cartier Panthere MOP 22mm Ref. 1280 2 Factory Diamond Bezel Watch in 18K Yellow Gold £10,794.00 GBP
Art Deco Old European Cut Vintage Engagement Ring 1.69ct G/VVS1 GIA £24,580.00 GBP
Vintage 1 CTTW X Shape Multi Color Progress Pride Rainbow Sapphire Pin £1,675.00 GBP
GIA 1.25CT Pear Cut Fancy Green Yellow Diamond 18K Tri-Colored Gold Bypass Ring £20,937.00 GBP
GIA Certified 16.7 Carat TW Lab Grown Spinel and Diamond Multi Gem Set Cocktail Ring £5,025.00 GBP
GIA Certified 1.24 Carat Radiant Cut Yellow (Y-Z) Diamond Engagement Ring in 18K White Gold £9,698.00 GBP
53 Carat Oval Cut Aquamarine and Diamond Multi Row Tennis Bracelet in 18K White Gold £23,345.00 GBP
72.51 Carat Natural Oval Cut Ruby 5-Row Multi Link Tennis Bracelet in 18K Gold £41,873.00 GBP
25 Carat Total Round Cut Natural Diamond Bezel Set Link Bracelet in 18K White Gold £41,873.00 GBP

NEW

For HER

See our latest Women's Pieces
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Introducing

For HIM

See our latest Men's Pieces
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Luxury Legacy

A curated collection of the finest natural gemstone jewelry in the world.

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Vintage 4.50 CTTW Old European Cut Diamond Three-Stone Art Deco Engagement Ring in Platinum £71,184.00 GBP £77,884.00 GBP
GIA 1.25CT Pear Cut Fancy Green Yellow Diamond 18K Tri-Colored Gold Bypass Ring £20,937.00 GBP
GIA Certified 16.7 Carat TW Lab Grown Spinel and Diamond Multi Gem Set Cocktail Ring £5,025.00 GBP
GIA Certified 1.24 Carat Radiant Cut Yellow (Y-Z) Diamond Engagement Ring in 18K White Gold £9,698.00 GBP
53 Carat Oval Cut Aquamarine and Diamond Multi Row Tennis Bracelet in 18K White Gold £23,345.00 GBP
72.51 Carat Natural Oval Cut Ruby 5-Row Multi Link Tennis Bracelet in 18K Gold £41,873.00 GBP

Shop the Look

Our most popular looks of the season

Quick Buy
6mm - 9mm Round Diamond Disc Bracelet in 18K White Gold From £410.00 GBP
Natural Diamond Disc Necklace With Integrated 18k White Gold Cable Chain Necklace £1,499.00 GBP

Our Story, Our Promise

See how we've added value to thousands of customers, around the world.

Testimonials
“

So pretty and definitely sparkles. Time from ordering to delivery faster than I expected and that was an added bonus.

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“

It is as stunning as it looked on this website.

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“

Exactly as pictured. Beautiful ring!

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Quality and Service

Brand Watches

Authentic signed timepieces, featuring: Rolex, Cartier, Patek Phillipe, Audemars Piguet, Piaget, Tiffany & Co., Vacheron Constantin, Corum, and more.
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Watches

We carry vintage watches as old as 1920, to newer watch models made in the last 2-3 years. 

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Rolex GMT-II Black Dial 40MM In 2-Tone With Oyster Bracelet Ref. 116713LN £14,656.00 GBP £16,331.00 GBP
Rolex Submariner Date Blue Dial 40MM Ref. 16613 in 2-Tone Oyster Bracelet | Pre-Owned £16,080.00 GBP £29,312.00 GBP
Bulgari 31mm Catene Watch with 18k White Gold and Diamond Link Strap £18,006.00 GBP £25,124.00 GBP
41MM Rolex Datejust With Light Blue Dial Roman Numerals Year 2010 Watch £22,519.00 GBP £31,824.00 GBP
Piaget Polo Ladies 32mm Watch in 18K Yellow Gold With Diamond Bezel and Piaget Papers £24,496.00 GBP £27,637.00 GBP
Cartier Ballon Bleu Jumbo Large 42mm Mens Watch in 18K Gold Ref. 2998 With Box & Papers £24,287.00 GBP £27,637.00 GBP
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Cartier Roadster Ref. 2524 Men's Tonneau Large Size 18K Gold Watch in Leather with Box and Papers £18,718.00 GBP £25,124.00 GBP