Premier Rose
Premier Rose
The 137.02-carat pear-shaped pink diamond cut from a 353.9-carat Premier Mine rough
The Premier Rose is a 137.02-carat pear-shaped pink diamond, cut from a 353.9-carat rough recovered at the Premier Mine, South Africa, in 1978. The cut stone is among the largest faceted natural pink diamonds in existence and is one of the principal modern stones associated with the Premier source. The piece carries the rough's original name in commemoration of the find and remains in private hands. The rough belongs to a small subset of significant pink diamonds recovered at Premier — a mine more often associated with colourless Type IIa production but historically capable of intermittent pink output as well.
The rough and the find
The rough Premier Rose was recovered in 1978 from underground workings at Premier Mine, by then operated by De Beers under the umbrella of the wider South African diamond programme. The stone weighed 353.9 carats in the rough and showed the delicate pink tone characteristic of the small fraction of Premier output that produces pink and brown stones rather than the more common colourless Type IIa material. The rough was acquired by the William Goldberg Diamond Corporation of New York for cutting.
The Goldberg cutting team — under the direction of William Goldberg himself, with master cutter Sol Goldberg — spent approximately a year studying the rough before committing to a cutting plan. The decision to cut a single large pear-shape rather than to divide the rough into multiple stones was unusual; large pink rough is more commonly cut into matching pairs or sets to maximise the marketable yield. The choice to retain the size in a single stone reflected the unusually clean character of the rough and the strategic decision to produce a singular notable pink diamond rather than a set of smaller commercial stones.
The cut stone
The finished Premier Rose weighs 137.02 carats and is cut as a pear-shape with conventional brilliant facet pattern. The cutting yield from rough to finished — approximately 39 per cent — is high for a stone of this size and grade, reflecting the favourable internal character of the rough and the cutting team's confidence in the stone. The colour is described as a delicate light pink, falling within the modern Fancy Light Pink to Fancy Pink GIA grading range depending on the specific orientation under examination.
Two further pear-shaped diamonds were cut from offcuts of the same rough: the Premier Rose II at approximately 31.5 carats and the Little Rose at approximately 2.11 carats, completing a matched set drawn from a single source. The three stones together represent one of the most coherent modern pink-diamond cutting programmes from a single rough.
Pink diamonds at Premier
Premier Mine is far better known for its colourless Type IIa production than for pink diamonds, but the pipe has produced pink stones at intervals across its operating history. The mechanism of pink colour in natural diamonds is not fully understood; the leading explanation involves localised plastic deformation of the diamond lattice that creates colour centres absorbing in the green-yellow region of the visible spectrum. Argyle in Western Australia was the dominant modern source of pink rough until the mine's closure in 2020; Premier holds a position as a smaller but historically consistent secondary source.
Provenance and the auction market
The Premier Rose has not appeared at public auction; the stone has remained in private collections since cutting and is therefore not associated with public market price points in the way that auction-circulated diamonds are. Where the stone is referenced in trade discussion, it functions as a benchmark for the upper end of natural pink diamond quality at significant size — a category in which only a handful of stones are known.
For diamond buyers and collectors examining significant pink-diamond candidates, Premier provenance — for stones with documented connection to the mine — adds historical weight to a category in which Argyle has dominated the modern conversation. The Premier Rose remains the principal modern Premier pink reference point.