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  • We are committed to bringing you the most exceptional natural gemstones here at SHJB and this early 1900s cocktail ring checks that box. The centre of the ring holds a giant natural sapphire, estimated at 7.50ct in weight with a sizable spread of 14mm x 10.5mm. The deep inky blue stone has been beautifully fashioned to show off its natural straight colour zoning across the table, a natural phenomenon that occurs as the sapphire crystal grows and is subjected to changing environmental conditions. The result is a unique stripey blue gemstone that looks different in almost every light.


    Surrounding the bezel set sapphire are chunky rose cut diamonds in a cushion shaped halo. Set into contrasting white gold the rose cut diamonds have a grey-ish tone to their hand cut facets, flecked with natural carbon inclusions. With age a number of these diamonds have small chips or nicks to them, but this is only visible with magnification. Aside from this and some surface scratches and nibbles to the sapphire the ring is in excellent condition.

    Large 7.50ct Sapphire and Rose Cut Diamond Ring

    • Stone: Sapphire (no evidence of heat) and diamond

      Sapphire Carat: 7.50ct approx. (14mm x 10.5mm x 6mm)

      Diamond Cut: Rose

      Diamond Measurements: 2mm – 3mm approx.

      Diamond Clarity: SI1 - I

      Metal: 15ct gold, tested

      Weight: 6g

      Head Dimensions: 20mm x 16mm

      Ring Size: L (US 5.5)

    • Please add the size you require as a note at checkout. 

      We offer a ring re-sizing service by our antique specialist for a small fee, starting at £40.

      Most of our rings can be resized, but if they can’t we will stipulate this in the description.

      As a rule we will only alter a ring by three UK sizes. If you would like to size a ring more than three UK sizes (either up or down) please contact us on a case by case basis and we will try and accommodate you as best as possible.

      We do not offer refunds on altered pieces, so please make sure you love your new piece before you purchase. 

      Sizing takes approximately 1-2 weeks.

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