What is the collective nouns for diamonds?

There isn't a widely accepted collective noun for diamonds.

However, here are some options you could use, depending on the context:

Formal:

* A collection of diamonds

* A suite of diamonds

* A string of diamonds (for a necklace)

* A scattering of diamonds

Informal:

* A sparkle of diamonds

* A blaze of diamonds

* A shower of diamonds

You could also be creative and come up with your own descriptive collective noun, such as a constellation of diamonds or a treasury of diamonds.