Download our Black Diamond Markets, Riggs Oil Phone App today! Our mobile app will allow you to receive unique/valuable deals/coupons for the hottest products and services we provide. In addition, you will also be able to join our vigorous loyalty program right from your phone. Track your loyalty points, VIP club levels, and redeem right from your phone. You can view our locations, store hours, contact information, features, and unique offerings! It's the easiest and most beneficial way to take full advantage of all of your special offerings!