Vintage, 1940s blue sapphire and diamond cluster engagement ring
Current band size: UK: O / US: 7.5 /
Single complimentary re-size available. This ring can easily be re-sized up or down to any size.
Provenance
Original to c.1940, this vintage cluster engagement ring is set to centre with a natural blue Sapphire with an intense and rich midnight blue hue. Oval-cut and claw-set in an open-back setting. Surrounded by halo of round brilliant-cut diamonds, each perfectly matched in colour and clarity. Their bright white scintillation contrasts incredibly with the deep blue centre stone, as if they were stars against a clear night sky.
The diamonds are also claw-set in open-back settings and the gallery is intricately pierced. The rings profile sits low on the finger, comfortable and practical for everyday wear and the shoulders gently taper inwards before flowing to a solid gold band. The shoulders are very slightly open and feature delicate millegrain details.
The Natural Stones
- Sapphire weight: 1.21ct
- Sapphire size: Length 7.9mm; Width 6.4mm; Depth 3mm
- Total diamond weight: 0.35ct; Twelve Round brilliant-cut diamonds.
The Band
- Metal Composition: 18ct yellow gold, platinum
- Hallmarks: Marked with'18CT' to indicate 18ct yellow gold. Futher marked with 'AM3' and makers mark "SM' which we have not been able to trace further.
The Ring Overall
- Front Head Dimensions: Length 13.5mm; Width 11.9mm
- Height of Setting: 7mm
General Wear & Condition
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Excellent: all stones are secure and well set, with no damage to the mount. Professionally polished and carefully inspected by our workshop, ready to wear and enjoy.
Unless stated otherwise, gem weights and specifications are estimated (assessed in mount).
We will only carry out adjustments we are fully confident in and that preserve the structural integrity of the piece.
Simply select your desired size at checkout and include any special requests - we will always do our utmost to accommodate.
You will receive a confirmation email with a link to our re-sizing timeframe guide, so you know when to expect delivery. Once your ring has been dispatched, we will send a separate email with full tracking details.
A small number of rings cannot be resized due to their material or design; this will always be clearly noted in the product description.
We provide free, fully insured express shipping on all orders.
- UK Orders: Shipped via DHL or Royal Mail Special Delivery the working day after payment clears. Please allow 1–2 business days for delivery.
- International Orders: Shipped via DHL the working day after payment clears. Please allow 4–5 business days for delivery.
All shipments are fully tracked and require a signature upon receipt, ensuring your order arrives safely and securely.
For all orders shipped to the U.S., we cover international tariffs and duties, so you won’t need to worry about them - they are included in the price on the website.
If you wish to return a ring, we offer a full refund minus the cost of these tariffs: 10% for antique rings (over 100 years old) and 15.5% for other pieces.
Please note that some U.S. states may charge a small additional tax on delivery, typically between $40–$80.






