This ring is sold today by De Beers, the link for it is here, and it retails for £2,400 new (remove the "DOT" in the link for a real dot - I have to do that to prevent it being automatically removed from the listing).  wwwDOTdebeersDOTcoDOTuk/en-gb/db-classic-round-brilliant-diamond-ring-in-platinum/R102396

The example I have for sale is in excellent, bright and clean condition.  It has been serviced by my jeweller, and carries only light signs of handling wear / micro scratches visible under magnification.  It has no damage, bends etc.  It has not been adjusted or engraved.  

Dimensions and details (all approximate):

Estimated diamond weight:  0.20ct

Estimated diamond colour:  I-J

Estimated diamond clarity:  SI2-P1

Ring size:  J ½ (can be adjusted +/-3 sizes either way, according to De Beers)

Weight:   3g

The ring is hallmarked for Sheffield and is stamped "DB" and "950" and "A73386".  There is a hidden brilliant cut diamond inset to the band interior, with "DE BEERS" laser engraved next to it.

In its original De Beers ring box, high gloss lacquer in deep purple (appears to be brown in the photos - but is definitely a deep purple  in real life), flocked with a black suede effect interior.  In excellent condition, only the lightest signs of handling wear.  De Beers ring boxes are fabulous - the interior ring bed lifts as the ring is pulled out, so that it can be displayed on a raised bed in the box (see photos).

This ring has no original papers accompanying.

I will send this ring carefully packed via signed-for Royal Mail and will happily cover those costs.  UK SALE ONLY!