JCK shows a photo (pg 116) of this gorgeous necklace (click on 'company') over a hand, which really emphasizes how BIG these pearls are. WOW! Unfortunately, the photo isn't online, but here's the description:

With 23 high-quality, well-matched South Seas white cultured pearls that range in size from 18 mm to 21.75 mm, this magnificent 18-inch necklace (worth seven figures) might be the ultimate pearl necklace. The necklace (and hand) belongs to Alexandre Hahn, of Gerhard Hahn Pearl, Düsseldorf, Germany.

from http://www.jckonline.com/article/CA6591596.html

Again, WOW!