Our Jewellery Valuation Specialist uses an eight-point appraisal process for analysing jewellery and assessing its real worth. It’s a rigorous approach which involves individually testing all facets of the piece and then checking it against current market demand.
1) Purpose of the Appraisal
This is confirmed with the customer and is important as the valuation needs to reflect the market use of the jewellery. For example, if it is for insurance purposes, a family law hearing or private sale.
2) Metal Tests
Metals are tested using acid or electronic analysis to determine the caratage of the jewellery, e.g. 9ct, 14ct, 18ct etc.
3) Gemstone Identification
Gemstones are identified using a x10 loupe eyeglass or more complex techniques involving a binocular microscope, ultra violet light testing or refractive index analysis.
4) Quality Analysis
Grading of the gemstone is achieved through detailed analysis of its colour, cut and clarity.
5) Size Analysis
The gemstone is measured and its weight calculated.
6) Manufacture Identification
An assessment is made of how the item was manufactured, such as cast, handmade or a combination of both.
7) Type and Quality of Settings
Each type of setting within a piece of jewellery is individually assessed for its quality and complexity as it can affect the overall valuation. There may be more than one type of setting, such as grain, claw, rubover and channel etc.
8) Valuation Certificate
Each component of the piece, including the mount, settings and gemstones, are then given a price. These are combined to establish an estimated value based on the market purpose of the jewellery. The valuation is then recorded on an appraisal certificate together with a high definition photograph of the item.