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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.
October 10, 2024 | by Admin
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.
December is a special month for those enchanted by gemstones, as it boasts not one, but three charming birthstones — zircon, tanzanite, and turquoise. Each of these gems holds its own unique allure, from the brilliant sparkle of zircon, which is often mistaken for that of diamonds, to the timeless temptation of turquoise, prized for its sky-blue hue and ancient cultural significance. But there’s one gemstone that really catches our eye. So, what is it that makes tanzanite truly stand out?
Tanzanite floral bubble shank delicate ring
From £64
Prong Setting Pear Tanzanite Earrings
From £667
Prong Setting Tanzanite Halo Engagement Ring
From £1,543
Marquise Shaped Tanzanite Diamond Hoops
From £1,365
Prong Setting Pear Tanzanite Pendant
From £482
The Discovery Of Tanzanite

Discovered in the foothills of Mount Kilimanjaro in Tanzania in 1967, tanzanite is found in only one place on Earth, making it one of the rarest gemstones available today. According to legend, Maasai herders were the first to find the gemstone after a lightning strike ignited a fire, exposing vibrant blue stones in its ashes. Named after its country of origin, tanzanite has quickly become a modern gemstone icon thanks to its exclusivity and mesmerising colour.Tanzanites Colour Spectrum

One of the most captivating features of tanzanite is its vast colour range, shifting from deep, royal blues to rich violet shades depending on the angle and light. This phenomenon is known as pleochroism. While naturally occurring tanzanite can have a range of colours, the stone is usually heat-treated to enhance its vibrant blue and violet hues.Meaning And Symbolism
Tanzanite is more than just an exquisite stone; it carries a wealth of meaning and symbolism. Often associated with transformation, it’s said to encourage personal growth, spiritual awakening, and emotional healing. Additionally, the calming blue tones of tanzanite are believed to inspire tranquillity and bring clarity of thought, making it an ideal gemstone for those going through significant moments in life.Caring For Your Gemstone

Compared to some other precious stones like diamonds or sapphires, tanzanite is a relatively delicate gemstone. Sitting between 6.5 and 7 on the Mohs Hardness Scale, it requires extra care to maintain its beauty. Here are a few tips for keeping your tanzanite jewellery in perfect condition:- Use a mild soap and warm water with a soft brush to clean your jewellery. Avoid harsh chemicals and ultrasonic cleaners as these can damage the stone.
- Tanzanite can be prone to scratches and chips, so it’s best to avoid wearing it during activities that could expose it to hard surfaces or impact.
- When not wearing your tanzanite pieces, store them in a soft pouch or a separate compartment in your jewellery box to prevent damage.
With its enchanting colour, rich history, and deep symbolism, tanzanite stands out as one of December’s most captivating gemstones. Whether you're gifting a piece of tanzanite jewellery or adding it to your own collection, its individuality make it a standout choice. From everyday wear to statement-making style, this one-of-a-kind gemstone is the perfect way to celebrate a December birthday. Shop our collection of tanzanite jewellery online or in-store.