Interesting Facts, precious metals like gold & platinum do not smell/ or give off a odor (unlike brass) they will not not tarnish/fade (unlike copper) will not adhere to a magnet (unlike iron) in pure form, both gold & platinum are hypo-allergenic (bacteria can't even grow on them). If you look closely at both white gold and platinum, you will see that the color and look are not entirely the same. The platinum will be whiter, the white gold will have a faint yellowish tinge.

Platinum is so rare, that 10 tons of ore must be mined to produce only one ounce of platinum ore. It takes 5 months of processing this ore to produce pure platinum for jewelry purposes. Platinum's melting point is 1,772° C.

Cubic zirconia (cz) main purpose in life is to deceive us into thinking its a diamond. You can see the difference in side by side comparison, especially when soiled from normal wear , the cubic zirconia loses its brilliancy. If you have diamond- like stone (un-set) have your jeweler weigh it . A cubic zirconia will weigh about +/_ twice as much as it looks i.e. . A 5.mm round diamond weighs +/- 0.50 carat, a 5mm round cubic zirconia weigh +/- 1.00 carat.