Natural diamond pendant 14k white gold

The pendant is marked '14K' & is just about 9/16" (1.4 cm) long by 5/16" (8 mm) wide. The three round diamonds are very sparkly and weigh .35 carat total weight. Chain not included. Vintage item in excellent condition, just had it cleaned at the jeweler, rhodium plated and polished. Not sure of the brand, I labeled it under Kay jeweler for exposure