Untreated pure virgin iron is dull gray to silver in color. Black coating is the seasoning done by virgin iron sheetmakers to protect the utensil from early rust, when not in use.
You’ll need to re-season the utensil a few times before the first use. Rub it with a thin layer of oil, using a cloth or paper towel. Heat it up till its hot and smoking. Let it cool down, buff it with a cloth or paper towel to remove the soot. Then repeat it 3-5 times.
Don’t use abrasives like steel-wool to clean the utensil. Don’t soak it in or fill with water. Don’t wash it in the dishwasher. Just wash it with a little bit of soap, dry it well, and coat it with a little bit of oil. If you don’t use it frequently, it may get rusted.
A little bit of care will keep you safe and add iron to your food 😊