When shopping for a diamond loose or a diamond ring. Do research ! First it is best to shop locally so you can easily get in touch with the jeweler you are buying from and working with. Check reviews online in several places anybody can post a picture of diamond for sale but is that diamond they are showing the one you actually get? Many times it isn't the picture is a sample diamond because the diamond you are paying for that is being advertised for an extremely low price has clarity issues or is not that white. Make sure you ask questions and do research on who you are buying from.
A diamond is the hardest on the Mohs hardness scale which measures the hardness of a mineral by its resistance to scratching. But saying a diamond is the hardest is a little deceiving Hardness equals brittleness a diamond can be chipped or cracked very easily when faceted and mounted in a ring. Care for your diamond with regular cleanings and checking the prong tightness regularly by a jeweler. Take off your diamond when working with your hands in household cleaners or with tools .
Carat weight the size of your diamond is based on carat weight. The larger the diamonds carat weight is basically the higher the price. The best tip I can give on carat weight is if you looking for one-carat diamond do not rule out a .99 carat no one will know the difference except you and your wallet. The same goes for larger if you are wanting a 1.50 carat look at a 1.48 or 1.49 you will a notice a difference in price and the 1.50 will look no different than the 1.49.
Diamond fluorescence. Fluorescence in a diamond refers to the blue glow that comes from the diamond when put under ultraviolet light. Now the diamond industry looks at this as a bad thing and discounts diamonds with strong blue fluorescence as much as 15%. This is not a bad thing fluorescence will make your diamond appear whiter while saving you money. So search out a diamond with strong blue fluorescence and compare the stone to a diamond without fluorescence and judge for yourself.
The first thing you need to figure out when buying a diamond is a budget. Before one even starts searching for a diamond a budget needs to be set that you are comfortable with. A diamond is a major purchase that lasts forever so what might seem like a high price really is not when you factor in the cost over years of ownership. You are the only one that can make the decision of what to spend on your diamond you should not base this on what a friend, relative or colleague spent on their diamond. Make your diamond purchasing experience a memorable one not a life lesson.