The armor is undergoing final tests in Russia, which is also part of the project, after initial tests using Kalashnikov assault rifles in Ukraine. The alliance plans to buy the armor to use it in commandos' helmets, planes, and helicopters.
A senior researcher at the Kharkov Mono-crystal Institute, said the armor was a kind of "three-layer sandwich" made of glass, plastic and sapphire.
"Sapphire is designed to turn a cone-shaped bullet into cylinder-shaped, which will then get stuck in the other two layers," Leonid Lytvynov said.
"The bullet will be flattened by sapphire, which will reduce the strength of the shot, and a bullet could be stopped even by a thin glass layer," he said.
Artificial sapphires, which are only less tough than diamonds, are used in the armor, Lytvynov said, adding that leading carmakers had also shown an interest in the armor.
But the center in Kharkov said no large-scale production was currently being planned, as the material would continue to be improved, given the growing use of super hard tungsten carbide bullets in the world.