Peacock — The Premier Body Colour for Tahitian Cultured Pearl
Peacock — The Premier Body Colour for Tahitian Cultured Pearl
A dark grey-to-black base layered with rotating green, rose, purple, and blue overtones
Peacock is the trade designation for the most prized body colour in Tahitian cultured pearl: a dark grey-to-black base interleaved with rotating overtones of green, rose, purple, and blue, recalling the iridescence of the male peacock's tail feathers. The colour is produced naturally by the black-lipped oyster Pinctada margaritifera and is not the result of dye or other post-harvest treatment. Peacock-grade pearls command the strongest premiums in the Tahitian market, typically twenty to fifty per cent above grey or silver body colours of equivalent shape, lustre, and surface quality.
What peacock means
Strict peacock identification requires that the pearl exhibit all the characteristic overtones simultaneously, visible as the pearl is rolled under daylight-equivalent illumination. A pearl dominated by green alone is termed green, not peacock. A pearl with strong rose-to-aubergine overtone but minimal green is termed aubergine or cherry. Peacock proper is the multicoloured combination, with the rotation of overtones across the surface contributing to the perception of depth and movement.
The body-colour designation describes the pearl's overall tone, distinct from overtone (the secondary colour reflected from the surface) and from orient (the iridescent play visible in particularly high-lustre pearls). Tahitian colour grading by GIA, the Tahitian Pearl Authority, and the major pearl-trade laboratories evaluates body colour, overtone, and orient separately and combines them into the overall colour assessment.
Origin and formation
The black-lipped oyster cultured in French Polynesia produces the entire commercial Tahitian pearl supply. The dark body colour is a function of the oyster's nacre composition, which differs significantly from that of the white-lipped oysters used for South Sea white pearls and from the akoya oysters used for Japanese cultured pearls. Within the black-lipped population, the proportion of oysters yielding peacock-grade pearls is small; commercial harvests grade the produced pearls into multiple body-colour categories, with peacock representing only a fraction of total output.
Peacock pearls range from approximately 8 millimetres to 16 millimetres in diameter, with the most-prized examples falling in the 11 to 14 millimetre range. Larger sizes are produced occasionally and command exponential premiums. Round and near-round shapes are most highly valued; baroque and circled-baroque peacock pearls are also marketable, particularly in pendant and earring applications.
Lustre and surface
High lustre is essential to a top peacock pearl. The dark body colour both showcases and depends on the lustre — an underwhelming finish on a dark pearl reads as flat, while strong lustre produces the depth that allows the overtones to rotate convincingly. GIA's lustre grading scale (excellent, very good, good, fair, poor) applies, and peacock pearls graded excellent or very good are the principal targets for high-jewellery applications. Surface quality is graded on a five-point scale (clean, lightly spotted, moderately spotted, heavily spotted, severely spotted) with the cleanest pearls commanding the highest premiums.
Care and trade
Tahitian pearls of all colours, peacock included, require gentle handling. Soft cloth wiping after wear, occasional cleaning with mild soap and warm water, and avoidance of chemical exposure are the standard care practices. Stringing should be inspected and re-knotted periodically. Peacock pearls in single-pearl pendant or earring applications are widely produced; matched strands of round or near-round peacock pearls are scarce and command substantial premiums above single pieces.