Contact Us Knight Diamond Company for the best diamond jewelry, engagement rings, diamond bracelets, diamond necklaces, and other jewelry.

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Locations in San Diego:

El Cajon, CA – (On Mollison Ave.)

Downtown San Diego – (6th Ave. & E Street)

Clairemont, CA (on Balboa Ave.)

La Mesa, CA (Jackson Dr. across from Toys R’ Us, Ross’s & Walmart)

Knight Diamond Company San Diego 255 3rd Ave. Chula Vista CA 91910

La Jolla, CA (on Girard Ave.)

Knight Diamond Company Manhattan Empire State Building 350 5th Ave., 59th Floor New York, NY 10118

Knight Diamond Company Long Island

Knight Diamond Company Hicksville

Contact Us Knight Diamond Company for the best diamond jewelry. We have locations on Long Island in the following areas:

At Knight Diamond Company, our mission is to provide you with the finest quality diamonds and jewelry, handcrafted to perfection. We aim to exceed your expectations by offering a personalized shopping experience that captures the essence of luxury and elegance.

The store has a history of growing successful jewelry stores from the 1950s until the present, some of which are now the largest diamond stores in Chula Vista, CA 91910, and San Diego. We are proud to announce the opening of our San Diego Diamond Store in downtown Chula Vista. The store is positioned on 3rd Ave. between E and F Street (next to the corner store on 3rd Ave. and Davidson Street).

Knight Diamond Company is a full-featured diamond store in Chula Vista, offering a large selection of diamond engagement rings in Chula Vista, diamond wedding rings in Boulevard, and diamond jewelry in East Meadow, NY, at affordable prices.