This crystal clear glass vial with black plastic cap is perfect for displaying or selling your gold. It is 1-13/16″ tall by 9/16″ wide with a 5/16″ opening. The vial has a liquid capacity of 3.7 ml and will hold about 1 ounce of gold, but this varies with the size of the gold and is a rough estimate only. When filled with water it also acts as a magnifier for small gold contained in the vial making it popular for selling small quantities of gold. This vial might break if dropped and therefore is not recommended for field use.