Just before we start, Myanmar and Burma (old name) are the same. Zawgyi, on the other hand, refers to the non-Unicode typeface for the Burmese script. So when we say Burmese Keyboard or Zawgyi ...

Ruby is an incredibly durable gemstone if there are no treatment-related durability concerns. - Courtesy Jan Goodman Co. Hardness and toughness Gem and mineral hardness is measured on the Mohs scale.