C. 1950 Vintage 1.75 ct. t.w. Diamond and .65 ct. t.w. Ruby Ring in Sterling Silver and 14kt Yellow Gold. Size 6.75

STERLING SILVER: Also known as "Standard Silver," sterling silver is silver alloyed with other metals to increase the hardness and durability. Generally, sterling is 92.5% silver and 7.5% other metals. Some sterling silver jewelry is plated with 14kt-18kt gold and referred to as "vermeil," or "gold over sterling."

14KT: Karat (abbreviated kt or K) is a unit that indicates the purity of gold in the metal. 14kt is 58.33% gold. In the United States, 14K yellow gold is most favored and used in jewelry.

Diamond: The hardest and most brilliant of all gemstones, a diamond can make the heart race with its pure and fiery spark. An ancient symbol of love, a diamond is the preferred gemstone for tokens of affection, such as rings, earrings, necklaces and bracelets. Diamond is the birthstone for April.

OLD MINE CUT: An antique gemstone cut dating back to the 1700s. Features a rounded square silhouette similar to the modern cushion-cut, but conforms to the shape of the rough gemstone in order to preserve the weight. The culet is usually large enough to be easily seen through the table of the diamond.

Clarity VS2: Very slightly included. Inclusions are observed with effort under 10x magnification, but can be characterized as minor.

OLD EUROPEAN CUT: An old-fashioned gemstone cut dating back to the 1800s. With a round shape and 58 facets, it is considered the precursor to the modern brilliant-cut. However, it has a greater depth and smaller table than the brilliant-cut of today.

Color Grade H-I: Near-colorless

CLARITY SI2: Slightly Included. Inclusions are noticeable under 10x magnification.

RUBY: A bold fiery stone, the ruby is a symbol of wealth, vitality and love. When cut and polished, the ruby's high luster is as dazzling as a diamond's. Ruby jewelry makes the perfect gift for loved ones and is the birthstone for July.

SQUARE: A symmetrical shape with four equal sides.