Featured Puffy heart pendant missing stone

Bought in a job lot, I think it has some age? Can't decide what to do about the missing stone. I have some I could replace it with but am undecided, so am asking for opinions please. Clear or red? Or would you leave it as it is?

 

Either, depending on preference. Whatever you can find that fits.

 

I like color.......

 

RED will 'snazzy' it right up!!!!!!!

 

Amethyst for me.

 

It is yours, so whichever you prefer. Blue or green would also work.
A sweet little heart. I am not a heart jewellery person but I always like those puffy shapes.

 

Thank you all, it seems colour is the most popular. I have red and clear stones which fit and kept trying them in it but couldn't decide which to go for as I used to be indecisive but now I'm not so sure, and both look good in different ways

 

Personally I'd give clear a shot. Definitely whatever says, "that's it!" to you.

 

So would I.