10k Gold heart setting with a heart shaped garnet stone and a small cubic zirconia above. 

Weighs 0.6 grams. 
Dimensions are 13 mm tall x 6 mm wide x 5 mm deep.
Coin and Chain in pics is not included. $10 extra for 925 18" box chain.

Lovely pre-owned condition.
Very light wear.
Cute little pendant.