A Glass Heart pendant that is 1 1/4" across is a perfect size. It's not too big or too small. Put this on a 14K gold chain and you have a wonderful gift or a personal choice for your self. 

Need a chain? Try this beautiful 18" 14K gold chain.

https://judimccormickjewelry.com/collections/necklaces/products/14k-gold-chain-18