Gwyneth Paltrow,
Jessica Alba, and Vanessa Lachley have all chosen to wear diamonds cut into the
"Asscher" shape. This particular way of cutting a diamond was created
by the same diamond cutters who cut the famous Cullinan I & II diamonds, Joseph
Asscher and Abraham Asscher. Those two diamonds make up part of the British
crown jewels. Two generations later, in 1999, Edward Asscher reworked the
original design. He added 16 more facets to the Asscher cut calling it the
Royal Asscher. The classic Asscher cut has the same amount of facets as a round
brilliant which is 58 facets. The new
design is patented and is available through the list of retailers found on
RoyalAssher.com.
It doesn't look like there are any retailers listed on RoyalAssher.com that list Royal Asscher diamonds that you can browse through. The best option is to call them up and arrange an appointment.
Asscher diamonds work well in Eternity rings, due to their shape. Arranging Asscher diamonds in a row still allows space at the stones' corners which give the prongs some space to hold the diamonds in place as you can see in this photo of a diamond eternity ring sold by BlueNile.