These guys are the plug. Edwin Novel is a one stop shop for diamonds and jewelry.
While I was there I saw a container arrive with a shipping company called Brinks and the container was filled with bags of diamonds, they had 9 people manufacturing jewelry and 2 guys behind a computer and it looked like they were working on a 3D software designing.
If I would have known about Edwin Novel earlier my jewelry box at home would been much more extravagant today.