When choosing the actual diamond look to the 4C s. If you have turquoise jewelry or stones, you need to take special care to clean them since it is porous. If the turquoise is set in a piece of jewelry you should avoid submerging it in anything liquid as it can seep into the fissures of the jewelry and cause deterioration years down the road.
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Diamonds of premium cut proportions are almost as good as ideal. Most people will not be able to distinguish an idea cut from premium. Less diamond material is lost in the process of cutting the diamonds making it less expansive. One needs to keep in mind that appearance of a diamond is very subjective and cannot be fully evaluated just by their proportions along.
Color In the near colorless category H color grade is the second best. Most H color diamonds have a very light yellow or gray tint that may be more noticeable when the diamond is placed on a white surface. Diamonds with H color grade appear white and are great values because they are more plentiful and as a result less expensive.
Clarity Inclusions and external blemishes in diamonds of SI1 clarity may be easy to spot under 10X power magnification. Location of the inclusions greatly affect their visibility to the naked eye. SI1 diamonds of good color produce as good of a sparkle as the more expansive VS graded stones of lower color. Excellent bargains may be fond in this category.