With Sapphire Pyramid you can train your mind while having fungetting sapphires. You just have to complete the pyramid using theavailable numbers by adding and subtracting them to win as manysapphires as you can! Join now! It's free! - What is SapphirePyramid? Sapphire Pyramid is an addictive, amusing, and easy toplay game of mental calculations. Is a casual game inspired in amaths game where you have to complete a pyramid formed by relatednumbers. - How to complete the pyramid? To complete the pyramid youhave to calculate the missing numbers in the empty cells with theavailable numbers. - How to calculate the numbers in the pyramid?To play Sapphire Pyramid you just need to know that by adding twoadjacent numbers you can get the number that is over them.