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GENEAL INFORMATION - Maiko Nagayama Jewellery

MAIKO NAGAYAMA creates each piece of jewellery with top skilled craftsmen by hand. They pay great attention to detail, however the size and the form of each piece could vary because they are handmade. Please also be noted that all the gemstones we use are natural stones. Therefore the colour, inclusion and the form of the stone could vary as well.

British Hallmark

MAIKO NAGAYAMA is registered with UK Goldsmiths' Company Assay office in London for our articles for hallmarking. The Goldsmiths' Company have a great reputation for excellence which has been built since 1300 and has a history of expertise for over 700 years. Precious metals are rarely used in their purest form but are usually accompanied with other metals for workability, durability, and wearability. It is not possible to detect an article's precious metal content by sight or touch. Therefore it is a legal requirement for an Assay office to hallmark articles containing precious metals if they are described as such. Hallmarks are marks applied by striking with a punch - they can now also be applied using lasers. There are four Assay offices in the UK, in London, Birmingham, Sheffield, Edinburgh. They are private companies but are overseen by the British Hallmarking Council. The oldest Assay office work from royal charters (London and Edinburgh). A hallmarks consist of a series of marks applied to articles of the precious metals platinum, gold, palladium and silver. It means that the article has been independently tested and guarantees that it conforms to all legal standards of purity and fineness. It also guarantees provenance by telling us, as a minimum legal requirement, where the piece was hallmarked, what the article is made from, and who sent the article for hallmarking. The Full Traditional Hallmark comprises five marks:

1. Sponsor's Mark

2. Traditional Fineness Mark

3. Millesimal Fineness Mark

4. Assay Office Mark 

5. Date Leter Mark

The sponsor's Mark (Maker's Mark) is the registered mark of the company that submitted the article for hallmarking. It is formed of initials of the company, (MAIKO NAGAYAMA - MN) inside a shield shape. The shield shape varies, and a minimum of two initials must be included at the UK Assay Office. MAIKO NAGAYAMA's maker's mark is MN inside of the shield which looks like a flag shape. All of the MAIKO NAGAYAMA Haute Couture pieces comprise the full traditional hallmark.

Other services

Gift Wrapping, Carrier Bag

Every article will be wrapped in the MAIKO NAGAYAMA gift wrapping package with a MAIKO NAGAYAMA carrier bag.

Engraving Service

You can request a special engraving service. Any messages, dates, names or initials could be engraved on most of our articles apart from some designs. Please contact us for further information.

Message Card

Please contact us if you would like to add a message card. We could be able to post the article attached with a special message card.

Trunk Show

MAIKO NAGAYAMA trunk show are events in which we bring and show our collections of jewellery directly to store personnel or customers at a retail location or another venue such as hotel room or VIP clients' house or private party. We prepare to visit and exhibit our collections privately. Events occur every few months and are often themed around key events, including Christmas, Mother's Day, Halloween etc. Please contact us to make an appointment for more information.

Special Order

MAIKO NAGAYAMA Prêt-à-Porter jewellery collections uses mainly solid sterling silver or solid 9ct gold. You can order to make the solid sterling silver piece into the solid 9ct gold, or solid 9ct gold piece into an 18ct gold or platinum piece according to your preference. In addition, you can request a different colour  for the metal: yellow gold, white gold, rose gold. You can choose different gem stones to set to the original design, (we might suggest some ideas according to the hardness and the size of the material and design). It could take approximately 10 days if we have the same piece in stock or could take up to 12 weeks if we need to make it from scratch. Please contact us for further information and enquiries.