These FuturePlusX Glass Gems have a flat side and a curved side. This makes them easy to glue when doing craft projects. They come in a bag of approximately 100 gems. I had 108 in my bag. I like the 3 colors together which I would describe as a clear, a sea blue and a dark sapphire blue. They are very pretty and look even prettier under water. I used these in a vase with a beta fish and a peace lily. It made this so beautiful with my blue colored betta.
The size of the glass gems is not uniform in shape and size. They are very close in size but they are not all perfectly round or the exact same size. They vary just a little bit. You have to compare them to see the difference. This did not matter with my project but they may another craft project so I wanted to mention it. I couldn't be happier with how well these worked for my project.