Outstanding Mid-Century Modern Opal & Diamond Brooch, circa 1960’s. Of stylised spray design, set with a crystal opal cabochon displaying vivid spectral colours, estimated weight 6.21 carats and seven old brilliant cut diamonds of estimated total weight 0.75 carats.

The term crystal opal may be applied to any black or white opal which has a transparent, translucent, or semi-translucent body. This is also referred to as the “diaphaneity” of a stone. If light is able to pass through the stone, that is you can see through it, then the stone will be classified as crystal opal. The translucence of a crystal opal often gives it a greater clarity and vibrancy of colour than opaque stones. Pale coloured or white crystal opals are generally more valuable than opaque white opals, and ‘black crystal opals’ can often have more beautiful colour than opaque black opals. If possible, crystal opals are cut en cabochon, however sometimes a freeform or teardrop shape is cut in order to maximise the size and carat weight of the stone. A high cabochon is desirable in crystal opals to enhances the play of colour.

Metal: 18ct yellow gold.

Weight: 12.36 grams.

Length: 5cm.

Width: 4.5cm.

Marks: 18ct and Plat.

Condition: Excellent condition. Of classic Mid-Century design, the opal has no chips, abrasions or crazing and shows strong play of colour including red, orange, green, yellow, purple and blue. The opal measures 19 x 14 x 4.1mm. Diamonds of estimated colour H/J and clarity P1.

SEDGWICKS pride ourselves on sourcing and selling Antique & Estate Jewellery that is of fine quality and in great condition.

Antique & Estate Jewellery is seldom in perfect or ‘new’ condition as age is inherent for it to be classified as such. All items we sell are ‘Second-hand’ and will almost certainly show some signs of wear. These may include faint scuffmarks and small dents, even very minor repairs. These are considered acceptable when dealing with objects that have lived a full life. Any imperfections or minor damage will be listed in the description and visible in the photo.

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To help you make your assessment, many higher value items are accompanied by an Independent Valuation for Retail or Insurance Purposes.

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Mid-Century Modern Opal & Diamond Brooch, 1960’s