These are virtual gems in the game, "Pet Simulator X" on Roblox. After purchasing please be patient as I have a lot of orders and remember I will get to you as soon as possible. In your message just please state your time zone and Roblox username. This is 25 billion gems. 

Note: Each Quantity you buy equals 25 Billion Gems. So, if you get a Quantity of 2, you get 50 billion Gems.

All Trades are screenshotted for proof

Thanks :)