Kassoy LLC is the worldwide leader in jewelry supplies for over 75 years. From our collection of gemological equipment, gold/ precious metal testers, microscopes, jeweler loupes and more, you`ll never be left wanting after a visit. Carrying full lines of the extremely popular Mettler Toledo scales is something we are very proud of, especially considering so many of them are legal for trade, keeping you safe from the scurrying eye of the department of weights and measures. We also offer jewelry labeling and inventory management solutions, to help keep even the messiest jeweler organized. Come visit our main showroom in Manhattan to see a full line of what we offer!