One that's extremely popular is the diamond band. Sometimes the seals were not rings but stamps of other kinds, but if it was a ring worn then it was even more credit worthy as only the wearer could make the seal on the document. Seals and signet rings were made and used as far back as ancient Egypt.
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 Diamonds of I color are right in the middle of near colorless category. Experienced eye should be able to notice the presence of color. When mounted, I color diamonds will appear colorless to the most people representing great balance between price and perfection.
Clarity VS1 diamonds have very small inclusions. Usually an experienced grader does not find any internal faults, but does not have great difficulties to see the inclusions when he moves the diamond a little from side to side. Typical inclusions of this group are small, light clouds or small light cracks on the girdle.