Welcome to Diamond Cutters of Western New York

We are proud to be part of the hard working people of this spirited city with its rich history and significant traditions. Since opening our doors in 1984, our business has grown from a small wholesale operation into Buffalo’s prominent diamond manufacturer. Our business now reaches throughout the United States and has taken us all over the world to purchase quality diamonds rough and to select from the most current collections of jewelry designs.

Diamond Cutters has the largest selection of loose diamonds in Western New York. Skip the retailer, Skip the wholesaler! Here you can buy right from the cutter! The ability to cut our own diamonds eliminates the middle man and allows us to pass on substantial savings to our customers. We offer a risk-free shopping experience through lifetime upgrade and renovations policies never before offered by jewelry retailers giving you total confidence in your purchase. Intelligent shoppers will no longer have to travel to New York, Los Angeles, or Chicago to buy exquisite diamond jewelry at world market prices.

In addition to our two graduated gemologists, and our full-time goldsmith, Diamond Cutters also employs a very knowledgeable and experienced sales staff to assist our customers to choose or custom create a jewelry design that perfectly reflects their own personal taste.

Diamond Cutters has successfully changed everything about how diamond jewelry is sold in the Western New York by offering greater value, more selection and superior customer service. Our mission is to empower consumers while making diamond purchasing the romantic and enjoyable experience it should be. We are unparalleled in our passion to identify customer personal taste and crafting solutions to exceed expectations.


William Warthling

Francis Warthling
Vice President

Staff Directory

William Warthling – President

Francis G. Warthling – Vice President

Roger Flanders – Diamond Cutter

Kim Glass – Showroom Manager/ Diamond Consultant

Sonya Alicia Smith – Diamond Consultant

Jill Britton – Administrative Assistant

Rachel Freudenheim – Diamond Consultant and Internet Sales

Terri Densmore – Diamond Consultant, Jewelry Insurance Specialist

Visit Our Showroom



  • "Such a pleasant experience. I left knowing that I picked the most perfect gift! Terri was such a great help! This was so much better than going into some chain jewelry store. Also they just moved, the new address is 2618 Union rd in Cheektowaga."

  • "I can't say enough about Diamond Cutters. They really just blew me away. Bill (the owner) treated my fiancé and I like family, taking his time with us, and just giving us an experience that was second to none. Price wise he blew the competition out of the water. He is really dedicated to giving his customers the best deal in town and they seem to take this very seriously. They have a beautiful showroom, a large selection, and a friendly staff that includes a designer on site: if you're looking for something customized to your liking. I came away from this experience with a very positive view of Bill and Diamond Cutters, and I'll definitely be back. My advice, don't bother with Reed's or Jared... Just go to Diamond Cutters


The 4 C’s

It’s important to remember that a diamond’s value is determined using all of the 4Cs.


The color of a diamond ranges from colorless to specific fancy colors. Including Pink, Blue, Red, and Green.


The better the diamond has been cut the better the make, thus the more beautiful the diamond will appear.


The carat measurement of a diamond is often confused with the size of the diamond, when in reality it is the weight.


The clarity of a diamond is the measurement and location of inclusions or flaws within
the diamond.