Yes Christine, I understood you meant to scratch only a small area. I did, and it doesn't come off. Something I did notice, is when I feel it with my nail, I can actually feel the mark. In the past I had only rubbed it with my finger and felt nothing. What baffles me, is that three different vases of the same style have the same marking. Has anybody heard of this happening on other pieces of glass? Also, how can a label, which is embossed on the top, bleed through to the glass? Lastly, if the vase listed at Molta Bella has never been displayed, where could the label have gone? I find all of this very interesting. Thank you for your responses.