This is a small #1 diamond pendant. It tests 14 k gold and has 10 small diamonds, 9 of which are about 2 points each.

There is a hole through the top where a very fine chain is meant to be strung through. 1mm would be best.
It is 0.04 troy ounces or 1.3 grams. It is 5/8” x 3/8”.