Some suggestions. Don't have the lights shining directly on the pen. If the pen you photographed had shiny plating, the plating would be completely burned out due to reflection of the lights. When photographing anything that is metallic, diffused lighting is your best friend. Are you using a tripod? You absolutely need one for pens for 2 reasons. First, the shutterspeed is going to be pretty slow and second, the camera is going to be quite close to the pen so the depth of field will be shallow so the aperture(f-stop) needs to be about as large a number as your camera has, which looks like f/4.5. Set the ISO to 400 and maybe even 800, set the camera to A(perture priority), set the aperture to the biggest number you can and take a picture, noting what shutterspeed the camera selected. Then switch the camera to M and adjust the shutterspeed to what the camera had selected. Now look at the picture and decide if it is too dark or too light. If it's too dark, decrease the shutterspeed, if it's too light increase the shutterspeed. Be sure to check after each shot to see if you got what you want. When you get the exposure set correctly, write down the settings so you can repeat them at a later time.