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We’ve teamed up with Klarna to provide flexible payment options, allowing you to shop the way you want. With Klarna, you can split your payment into 3 instalments or choose to pay later, making your shopping experience smoother and more convenient. Your order total must be between £100 and £499 to qualify.
We’ve teamed up with Klarna to provide flexible payment options, allowing you to shop the way you want. With Klarna, you can split your payment into 3 instalments or choose to pay later, making your shopping experience smoother and more convenient. Your order total must be between £100 and £499 to qualify.
June 09, 2025 | by James
It is law within the UK that every item of precious metal sold such as Platinum, Gold, Silver is stamped labelling the item with the type of metal it is. Platinum pieces which weigh less than 0.5 grams, 18ct Gold and Palladium pieces weighing less than 1.0 gram and Silver pieces weighing less than 7.78 grams are except from hallmark.
At Diamonds Factory all our products are hallmarked as per UK hallmarking law from London Assay Office (The GoldSmith Company)
The Goldsmiths' Company Assay Office is the oldest assay office in the United Kingdom. It has provided hallmarking services since The Goldsmiths' Company was founded in the 1300s. The company received its royal charter in 1327 and ranks 5th in order of precedence of the 12 Great Livery Companies of the City of London.
Hallmarking dates back to the 1300s when Edward I of England passed a law requiring any item made of silver, which was offered for sale, to be at least of equal quality as that of the coin of the realm (silver currency). The wardens of The Goldsmiths' Company were tasked with visiting workshops in the City of London to assay (test) silver articles. If these articles were found to be below standard they were originally destroyed and the metal forfeited to the King. If they passed, each article received the King's mark of authentication - the mark of a leopard's head. By 1478, there were several hundred workshops and merchants manufacturing silver articles in the City of London. It was not possible for the wardens to visit them all so the merchants were ordered to bring their items to Goldsmiths' Hall for testing and marking and a permanent Assay Office was established in the building. This is the origin of the term hallmark - struck with the King's mark at Goldsmiths' Hall.
In 1544 the Goldsmith's Company adopted the King's mark as their town mark and the mark of the leopard's head is now internationally recognised as the mark of this assay office.
The Goldsmiths's Company Assay Office is still based at Goldsmiths's Hall and remains the oldest company in Britain to be continually trading from the same site. However, it also has two satellite offices; at Greville Street in Hatton Garden in the heart of the London jewellery quarter and within a high security complex near London's Heathrow airport. It now has a new off-site facility within the Dalston-based jewellery manufacturer, Allied Gold. This is the first time in the Assay Office's 700 year history that it has opened permanent hallmarking services on a customer's premises.
In addition to hallmarking, the office has now expanded its range of services to support the jewellery trade and enforcement authorities. It offers a variety of specialist analytical services including nickel, lead & cadmium testing, antique silver dating, non-destructive compositional analysis, plating thickness measurement and a melt and assay service for scrap precious metal carried out in their fully independent on-site laboratory. Other services offered are a jewellery valuation service, laser marking, trading standards assistance, high quality photography and a comprehensive range of training and educational seminars, lectures and specialist events.
Were you born in July? If so, then your birthstone is the magnificent ruby! Birthstones are more than just pretty gems — they’re steeped in history, meaning, and tradition. Each month is associated with a gemstone that is believed to bring luck, energy, or protection to those born during that time. For July babies, the fiery ruby reigns supreme.
Men's Signet Ring With Ruby Gemstone
From £644
Ruby marquise dragaonfly dainty stud earring
From £375
Ruby and diamond lariate necklace
From £220
Oval Ruby and diamond cluster stud earring
From £609
Bezel set ruby with twisted rope shank everyday ring
From £111
Ruby Gemstone Tennis Bracelet
From £940
Ruby rectangular everyday Hoop earring
From £355
Ruby star and diamond bar delicate chain necklace
From £239
What Are Rubies?
• Colour is the most important factor — top-quality rubies display a vivid, pure red.
• Cut affects how well the ruby reflects light.
• In terms of clarity, while some inclusions are expected, very clear rubies are rare and highly valuable.
• Carat weight influences the size and value of the stone.
The Meaning Behind Rubies
• In ancient India, rubies were called Ratnanayaka, meaning “lord of the gemstones.”
• The French referred to rubies as “the dearly loved stone.”
• In the East, they were seen as “a drop of Mother Earth’s heart’s blood.”
Wearing a ruby was believed to attract good fortune, spark deep emotions, and protect the wearer from harm.
Famous Rubies Throughout History
The Sunrise Ruby
The DeLong Star Ruby
Elizabeth Taylor’s Ruby Collection
• Her husband, Mike Todd, surprised her with a Burmese ruby necklace, earrings, and bracelet while on holiday in Italy — famously gifting her the necklace just as she stepped out of the pool.
• Later, Richard Burton gifted her a ruby and diamond ring after years of searching for the perfect stone.
Celebrate Your Birthstone