# Trader - Stella 56 > Stella 56 is the back office for diamond wholesalers: stock, invoices and memos, payments and cheques, cash and bank, expenses and profit, on the phone and the desktop. Trader - Stella 56 ("Stella 56") is a web app at https://trader.stella56diamonds.com, operated by Stella 56 Diamonds. The home page and the pages below are public. Every other page holds one business's private records and needs that business's sign-in; a buyer's share link (`/catalog/`) is private to whoever holds it. Sign-in is with Google or with an email address and password. With Google, Stella 56 asks only for the basic scopes (openid, email, profile): name, email address and profile picture, used to create the account and sign in. It reads no Gmail, Drive, Contacts or Calendar data. ## Pages - [About Stella 56](https://trader.stella56diamonds.com/about.md): Stella 56 is the back office for diamond wholesalers: stock, invoices and memos, payments and cheques, cash and bank, expenses and profit, on the phone and the desktop. - [Privacy Policy](https://trader.stella56diamonds.com/privacy.md): What Stella 56 collects, including the Google account details it receives when you sign in with Google; how that information is used, stored and shared; and how to export or delete it. - [Terms of Service](https://trader.stella56diamonds.com/terms.md): The agreement for using Stella 56: what the service is, your account and your data, share links, fees, acceptable use, ending your account and the limits on our liability.