What is the most secure diamond setting?

The answer depends on how the diamond will be worn.

If the diamond is intended for a ring that will be worn 24/7, there are several settings that are secure. Most are prongs. Your jeweler can show you the variety.

If the hand that wears the diamond is engaged in active, skilled, hand-work: a construction worker, a blacksmith, even a surgeon, deciding on a secure diamond setting can be a challenge. The recommendation here is that the diamond not be worn 24/7, but that the ring be removed during the time that the working hands jeopardize the security of the diamond.

In other jewelry, your local jeweler can show you settings that are secure. In addition, take your diamond jewelery to a jeweler regularly and ask for an inspection, to verify that the prongs have not been damaged.