Set of 2 Solitaire Diamond Rings with side Diamonds

Gold : Because of the softness of pure gold, it is alloyed with silver, copper or palladium. The proportion of these other metals give yellow, white gold. Without precision, the gold used in jewelry is 18 K, corresponding to 75% pure gold.
Solitaire : A "Solitaire" diamond ring, means a ring with only one diamond. It is the most popular setting for engagement rings. The "Tiffany setting" is the most famous of them.
Diamond : In mineralogy, diamond is an extremely rare, precious and hard (named after the ancient Greek "unbreakable") metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice.