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About - H.L. Gross & Bro. Jewelers

5 Generations of Family is the online presence of H.L. Gross & Bro. Jewelers, a family owned, fifth generation couture retail Jewelry business, established in downtown Brooklyn, New York in the year 1910.  Now located in downtown Garden City, Long Island, there are currently 3 generations working together at H.L. Gross & Bro. Michael Gross is 4th generation family member and President.  Brad Gross and Matt Gross are 5th generation family members and Vice Presidents. Helene Gross is third generation and treasurer.

We have on premises three Graduate Gemologists, a jewelry manufacturing and repair facility that includes a state-of-the-art laser welding machine, and a watch repair facility.  Our gem lab includes microscopes, refractometers used to determine the refractive index of stones, a sarin machine used to measure the cut grade of a diamond with the latest software covering the new GIA (Gemological Institute of America) standards, a colorimeter to grade color and an ultra violet light for determining fluorescence.

Direct Relationships.  We pass the savings onto You!

Having sold over 35,000 engagement rings, we are extremely experienced with every facet of the diamond business. We have 50 year old relationships with the largest diamond suppliers, many of which are De Beers site-holders.  This means we are purchasing the diamonds from the source, eliminating the middleman, and passing the savings on to you. We guarantee the lowest diamond prices

Bridal Designers

We are authorized dealers of the top bridal designers, including  Tacori, Scott Kay, Vatche, Verragio, Henri Daussi, Precision Set, Martin Flyer, Simon G, Stardust, Jeff Cooper, SES, ArtCarved, PeJay, La4ve, William Levine and Danielle Trissi.

Our Reputation

We are members of the prestigious AGS (American Gem Society) and as such must adhere to their strict guidelines of business practices and professionalism. We are also members of the GIA, Jewelers Vigilance Committee, The Retail Jewelers of America, The New York State Jewelers Association and the Better Business Bureau.  To view our Better Business Bureau certificate, click on the logo below. Learn more about our history.

Our reputation is our most precious commodity and we go to great lengths to see that every piece we sell is the best it can be.  We stand behind our products to provide the ultimate in customer satisfaction and have many families that keep returning to us generation after generation. We look forward to the opportunity to serve you!

Community Involvement and Philanthropy

Michael Gross is a member of the Garden City-Mineola Rotary Club, has served numerous terms on the Board of Directors of the Garden City Chamber of Commerce and was honored by the Nassau Council Chambers of Commerce as 16th annual small business person of the year.

Recent charitable contributions have included an in store event to benefit the Diabetes Research Foundation, a donation to the Gift of Life and numerous local charities and being the major contributor to the Garden City Make a Wish Foundation annual fundraising event.

As Seen In...

We are recent sponsors of the New York Islanders hockey team and each month have gone onto the ice to present a watch to the player of the month along with a randomly picked fan.  You can see our ads locally in The New York Times, Newsday, and Distinction Magazine. In national publications we have been seen in Vogue, The Robb Report, Town and Country, W, In Style, Architectural Digest, Newsweek, Sports Illustrated, and Business Week.  We also run full page ads in the New York Mets, Knicks, Rangers and Islanders game programs and year book.

Shop with Confidence

Our Policies and Customer Service is the best in the business.  Click here to learn about our lifetime diamond trade in policy, Free Shipping, Lifetime Warranty and more. 

Directions to Our Store



With over 100 years of engagement ring experience, Since1910 is your trusted source for diamonds, engagement rings and fine jewelry. We stand behind everything we sell and we guarantee the lowest diamond prices!

Founded in 1910
5th Generation
100% Risk Free Shopping
 30 day returns*
Free Fed Ex Shipping

GIA Certified diamonds
 Certified Gemologists
Over 35,000 rings sold


Our Personal Shopper allows us to provide you the same level of expert service as we've been doing in our brick and mortar location for over 100 years. Let us help you create the perfect engagement ring with the guaranteed lowest diamond price.

Personal shopper

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