Jewellery terminology can sometimes feel complicated. This guide explains UK precious-metal hallmarks, diamond quality and the information you may see within LG Aurelia product descriptions.
A UK hallmark provides independent confirmation of the precious-metal fineness of an item. A complete compulsory UK hallmark normally includes a sponsor's mark, a fineness mark and an Assay Office mark.
Identifies the person or business responsible for submitting the item for hallmarking.
Shows the precious-metal purity in parts per thousand, such as 375 for 9ct gold, 750 for 18ct gold or 925 for sterling silver.
Identifies the recognised Assay Office that tested and hallmarked the item.
Some lightweight precious-metal items are legally exempt from compulsory hallmarking. Current UK exemption weights are below 1 gram for gold and palladium, below 7.78 grams for silver and below 0.5 gram for platinum.
Hallmarks can be extremely small and may appear inside a ring, near a clasp, on an end connector or in another discreet location. Their appearance and placement can vary between products.A compulsory UK hallmark contains the sponsor's mark, fineness mark and Assay Office mark. UK exemptions currently apply below 1g for gold and palladium, 7.78g for silver and 0.5g for platinum.
The internationally recognised 4Cs framework covers carat weight, colour, clarity and cut.
Natural diamonds form within the earth and are clearly identified as natural within LG Aurelia product information.
Laboratory-grown diamonds are created in controlled conditions and must be clearly distinguished from natural diamonds.
Cubic zirconia, moissanite and other diamond alternatives may resemble diamonds but are different materials. These will be identified accurately within the relevant product description.
Selected diamonds may be supplied with an independent grading report containing information such as carat weight, colour, clarity, measurements and identification details. The grading organisation will be stated where applicable.Not every diamond or diamond-set piece includes an individual grading report, particularly jewellery containing smaller accent stones. Any certification supplied with a product will be clearly stated.Laboratory-grown diamonds and diamond simulants are distinct categories, and gemmological laboratories use testing and separate reporting to identify them appropriately.
Contact our customer care team if you would like help understanding the hallmark, metal purity, diamond specification or certification supplied with a particular piece.