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Shop for Long Island engagement rings from Sylvie at H.L. Gross & Brothers Jewelers. They are a 5th generation, family owned couture jewelry business, established in the year 1910. Located in downtown Garden City, Long Island, there are currently 3 generations working together at H.L. Gross & Brothers Jewelers, Michael Gross is a 4th generation family member and President. Brad Gross is 5th generation and Vice President, and Helene Gross is third generation and treasurer. Shop a beautiful collection of Long Island engagement rings from Sylvie, from vintage engagement rings to classic engagement rings, among other wedding and bridal jewelry in New York.