Found these gold plated dumbbells for sale. Not a bad price either : r/mildlyinteresting
Blogilates Dumbbell - Gold 8lbs : Target
Priority Culture Dumbbells Dumbbells Set,dumbbells Set For Men Detachable, Adjustable Pure Steel Dumbbells, Arm Muscle Training Plating Dumbbell (Color : Gold, Size : 15kg*2) : Amazon.co.uk: Sports & Outdoors
PowerTrain Powertrain 48kg Adjustable Dumbbell Set W/ Stand Home Gym Weights Gold | MYER
Gold Dumbbell Set (in Canada) : r/HelpMeFind
Sogawave Golden Hand Weight Dumbbells, Titanium Coated and Non-Slip Grip,8 lb,Set of 2 : Amazon.com.au: Sports, Fitness & Outdoors
Newfield Shining Gold Chromed Electroplated Solid Round Head Steel Dumbbell 2.5kg to 25kg for Weightlifting Powerlifting Commercial Use - China Chromed Dumbbell and Gold Dumbbell price | Made-in-China.com
Here's how you can have your own gym made of gold... | from the Gym Marine blog.