Introdum: Igtræm Aluminum Garnet Iga Remarkable IG GG, IG Yttrium Aluminum Garnet in Laser Technology 2.1. Laserum et adversum 2.2 Modicia et dentala Defensa et Indusria Aerospace 3. YAG Yttrium Aluminum Garnet in Gemstone Industria 3.1. Lapona YAG Gem: Alticula 3.2 Lapidine AGG in Aelari 3.3. Durabils