garnet trillion ring 3D 打印模型

the gold weight of this ring is nineteen grams and seventy whistles.
the weight of this ring is 925 silver
it is eight grams and sixteen whistles.
rubies have a hardness of 9.0 on the mohs scale of mineral hardness. among the natural gems only moissanite and diamond are harder, with diamond having a mohs hardness of 10.0 and moissanite falling somewhere in between corundum (ruby) and diamond in hardness. sapphire, ruby, and pure corundum are α-alumina, the most stable form of al2o3, in which 3 electrons leave each aluminium ion to join the regular octahedral group of six nearby o2− ions; in pure corundum this leaves all of the aluminium ions with a very stable configuration of no unpaired electrons or unfilled energy levels, and the crystal is perfectly colorless.