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Tesoro Diamonds & Fine Jewelry is a "by-appointment" retailer of high-end jewelry, including luxury watches, certified loose diamonds, precious stones, and custom-designed jewelry. We specialize in custom engagement and wedding bands, and also carry a quality selection of finished jewelry. Our custom pieces are all manufactured locally by our team of talented designers and artisans. With offices in Los Angeles and Orange County, California, we are committed to providing exceptional customer service and creating lavish expressions of love to cherish for a lifetime.