I have played a little with moi3d tools.So first one was created a geometrical snowflake pendant,ater that I have tried to cut sphere and to get something abstract,it was nice but here was a problem inside of the object where objects intersected.

I was dissapointed but I started something new and this time I made pretty nice heart form which could be an ornament as well pendant jewerly too.At the end I created human like pendant too.

You could check if you like for my 3d renderings on this link.I use blender3d to make it more realistic and more appealing :)

https://www.crealitycloud.com/model-detail/691f43f9c20096ed428b368e