Diamond Supply Co. Customer Service Hours: Monday through Friday (9am - 5pm PST)
If you are having problems placing an order or have an issue with an order you’ve already received please contact our Customer Support at 323-334-3108 or email us at firstname.lastname@example.org (Please note, only emails concerning purchases made directly through the Diamond Supply Co. Web Store will be answered). Any inquiries made during the weekend will be answered the following Monday.