About Us

For over 75 years, Kassoy has been providing retail jewelers, apprentices, craftsmen, appraisers and precious metal assayers with the solutions they need to succeed.

Our seasoned experts are continuously scouring the globe in search of the latest innovations and most coveted values. Through strong relationships with industry associations and a highly pro-active approach, we maintain the highest level of quality, integrity and pride in our products.

From our exclusive gemological instruments, jeweler’s microscopes and legal-for-trade scales, to our wide selection of bench tools, retail supplies and even the latest in bar coding and inventory control technology, you can rest assured that every item we sell is handpicked and thoroughly evaluated by our expert team to ensure the utmost in performance and value. At Kassoy, we do the legwork, comparisons and evaluations, so you don’t have to!

From our Plainview, New York headquarters to our showroom in Manhattan, we strive to meet your individual needs. Our dedicated Sales Representatives, Customer Service Associates and Factory-Trained Technicians are available to provide full service and support — assisting you with new and existing orders, product recommendations and even technical issues — Monday thru Friday from 8:30 a.m. to 6:00 p.m. Eastern Standard Time (EST). You can also place an order or make and inquiry online 24 hours a day, seven days a week.

Over the course of the past 75 years, Kassoy has earned the reputation as the world’s leader in jewelry supply, and we take the responsibility that comes along with that reputation very seriously. With Kassoy, you’ll spend less time looking for what you need and more time focusing on your success. Remember, whatever your needs, Kassoy is here to serve you!

Kassoy reserves the right to make changes to product information and pricing when necessary. We will do our best to make sure the website is accurately updated, however, Kassoy is not responsible for any errors and/or omissions in product information or pricing.

Due to the constant fluctuation on the rate of exchange of foreign currency, prices are subject to change. Although, we are not aware until our most recent shipment of stock arrives, we make an attempt to notify our customers if an item's price is higher than what was listed during the checkout process, and allow them to decide if they would still like to purchase the item.