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2.31ct Boulder Opal and Diamond, 18ct Yellow Gold Pendant - Vintage Circa 1970

An exceptional vintage 2.31 carat boulder opal and 0.04 carat diamond, 18 carat yellow gold pendant; part of our diverse vintage jewellery collections

SKU: C4244

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2.31ct Boulder Opal and Diamond, 18ct Yellow Gold Pendant - Vintage Circa 1970 Video
Vintage Boulder Opal Pendant Gold
2.31ct Boulder Opal and Diamond, 18ct Yellow Gold Pendant - Vintage Circa 1970


This fine and impressive vintage opal pendant has been crafted in 18ct yellow gold.

The pendant has an asymmetrical form, featuring an impressive collet set fancy cabochon cut 2.31ct boulder opal.

The upper portion of the feature stone is ornamented by two individually collet set modern brilliant round cut diamonds.

The diamond settings are flanked with two scrolling ribbon style motifs.

The pendant is suspended from an 18ct yellow gold 18" chain via an integrated bifurcating attachment to the reverse of the setting.

This pendant has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 18 carat gold.

This vintage boulder opal pendant is supplied with an independent diamond grading report card.

NOTE *Boulder opals are the second most valuable type of opal (following black opal). Boulder opals are easily distinguished by their layer of solid brown ironstone left on the back of the stone. Boulder opals, as the name suggests, are mined from large ironstone boulders under the ground. Thin veins of colourful opal forms in cracks and fissures in these boulders. Because these veins of colour are so thin, opal cutters need to leave the ironstone on the back of the opal to form a full-sized stone. The thin layer of opal in boulder opals can display any colour of the spectrum resulting in a unique iridescence.

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone.

View the complete range of pendants and necklaces at AC Silver

AC Silver


This vintage pendant is fine quality, set with an impressive boulder opal displaying a fine play of colour and presence.

The well colour matched diamonds display a fine white colour and brilliance.

The pendant is a very good gauge of gold and is in excellent condition.

Reflections in photographs may detract from the true representation of this fine example of vintage jewellery/estate jewelry.

Opal Quality

Cut Fancy Cabochon

Content 2.31 carats

Dimensions 14.23mm x 9.55mm x 3.53mm

Diamond Quality

Colour (average grades) H

Clarity (average grades) VS2

Cut Modern Brilliant Round

Content 0.04 carat


Length of drop 2.25cm/0.89"

Width of pendant 1.38cm/0.54"

Chain length 45.72cm/18"


4.27 grams (including chain)

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Andrew Campbell started trading in antiques during the 1970s. Initially, Andrew lived in the South of England, travelling the country, searching for items of silver to buy. Andrew sold these items at various London markets and antique fairs. Over time, and through selling at a range of venues, Andrew built up a large and diverse customer base from private buyers to national and international trade customers.
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