Composition
- ConstructionHand made with a polished finish
- DesignElongated oval panel ring with a linear five-stone sapphire and diamond setting, pierced gallery back, and chased acanthus scroll shoulders
- Metal Purity18ct yellow gold, tested using electro-chemical equipment
- MarkingsNot hallmarked. Under the UK Hallmarking Act 1973, many antique and vintage pieces are legally exempt from hallmarking requirements. This piece has been assessed and is consistent with the period and metal type indicated
- Gross WeightApproximately 7.1 grams
- Curated FromEngland
Gemstone Details
- Total Carat WeightApproximately 4.77ct (3.70ct sapphires and 1.07ct diamonds)
Measurements and grading are approximate and represent the average of all gemstones in each section, as measured while mounted, unless actual measurements are noted.
Diamond Screening: All diamonds have been screened and are confirmed to be of natural origin.
Sapphire
- Quantity5
- CutAsymmetrical oval faceted
- Weight per stoneRange 0.25ct to 1.23ct
- Total WeightApproximately 3.70ct
- DimensionsRange 3.80mm x 3.20mm x 2.10mm to 8.1mm x 4.0mm x 3.3mm
- ColourB 6/3, medium dark very slightly greyish blue
- Origin & TreatmentThe centre stone has been independently certified as natural corundum, basaltic in origin, with no indications of heating (untreated), measuring 8.1 x 4.0 x 3.3mm at approximately 0.90ct (Gemmological Certification Services, Report No. 5786-3052, 30 June 2026). Only the centre stone has been submitted for independent certification. Given the consistent visual character across the grouping, the remaining four sapphires are presumed, but not certified, to share the same basaltic origin and untreated status.
Diamond
- Quantity16
- CutOld cut
- Weight per stoneEstimated at 0.07ct each
- Total WeightApproximately 1.07ct
- DimensionsLength 2.25mm, Width 2.25mm, Depth 1.90mm
- GradesColour G, Clarity I1
Note: there is a slight variation in colour across the sapphires and in dimensions and clarity across the diamonds; the noted figures represent an average for each group.
Condition
Very Good
A missing decorative gallery tooth was identified and has been professionally replaced, with the stones, particularly the centre sapphire, resecured as part of the same conservation work. The repair was carried out via precision laser welding with matching 18ct gold, finished sympathetically and fully restoring structural soundness. All settings have been professionally tested and are confirmed secure. The shank is consistent with the period, though its clean profile suggests it may be a sympathetic replacement, or that the piece began its working life as a brooch and was converted to a ring at a later date, possibly within the same broad period.
Keeper's Guide to Care
Everyday Wear with Care
Gemstone Hardness: Sapphire (9 Mohs); Diamond (10 Mohs). Among the most durable gemstones available, well suited to regular wear.
The Resilient — Diamonds, Sapphires & Rubies. These stones love a gentle refresh. A bowl of lukewarm, mild soapy water and a very soft toothbrush will clear away the dust of history. While modern jewels tolerate an ultrasonic cleaner, many vintage pieces do not; the vibrations can loosen old stones or rattle delicate settings. Given this piece's recent gallery repair and resecured stones, we recommend sticking to the gentle hand-wash rather than an ultrasonic or steam cleaner.
We recommend a professional health check once a year. A trusted jeweller can confirm all settings remain secure, keeping this jewel safe for the journey ahead.