Coster Diamonds

Founded in 1840, it is the oldest in the world, and has handled a number of historical masterpieces.

For example, it re-polished the Koh-i-Noor, which is mounted in the British Crown of Queen Elizabeth The Queen Mother and the Dresden Green Diamond, held in the New Green Vault at Dresden Castle.

Louis Benjamin Voorzanger won the silver medal for his achievements at the World Exhibition in Paris in 1855.

In 1959, Ben Meier polished the many diamonds which were set in a white gold watch, which was presented to Queen Juliana by the Dutch people.

This is a brilliant cut stone with 57 facets, weighing 0.0000743 carats (0.01486 mg).