You may just have a large diamond without much brilliance. The most common usage or symbolic meaning of knot jewelry is as a representation of love. However, you may also find some Celtic knot rings that are specifically for friendship or family relationships.
Diamond Certificate
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Good cut diamonds reflects most light that enters the diamond, but not as must as a premium cuts. They are less expensive than the premium-cut. Roughly 25% of diamonds are good-cut based on cut quality. This grade represents an excellent balance between quality and price.
Color I color diamonds are almost colorless. I color will be slightly detectable to the experienced eye. When cut to ideal proportions, the diamond will produce a warm intensity. I color diamonds are excellent value for the budget conscious and allow to save money or get a bigger diamond or a better cut.
Clarity Typically VS2 diamonds have minuscule inclusions. Inclusions in VS2 clarity grade should be mainly light-colored and completely invisible to the naked eye. Very small dark inclusions are allowable under the girdle when view under 10x magnification. Diamonds in VS2 category are great choice for people looking to balance high clarity and affordable price.