Stampede for black diamond wrinkle cream

Diamonds may already be a girl’s best friend, but black diamonds could be about to prove themselves even more precious. Thousands (almost 4,000) are already on the waiting list for a face serum which contains particles of the rare gem.

The draw? It claims to leave skin smoother, brighter and, well, sparkling with youth.

Like the more common white diamond, black diamonds have properties that boost the supply of collagen — the elastic substance which diminishes with age, causing the skin to sag and wrinkle. But unlike their paler counterparts, which reflect and bounce away light, black diamonds absorb and manipulate it, helping even out skin tone and improve the complexion, say the makers.