At Coster Diamonds in Amsterdam, all stages in the diamond cutting process are conducted in-house, from cutting rough material to polishing and grading according to clarity and quality. Coster Diamonds have skilled goldsmiths who will see to it that the diamond of your choice is placed in a beautiful setting. Coster Diamonds has a large collection of home-produced jewelry for you to choose from, or if you prefer you can have the stones you select set in a design of your own. READ MORE