Green, green glass

I have a lovely display cupboard built in a former front door. The bottom half is a cupboard where I keep vases, but the top half has an obscured glass back to let in the light and over the years I have collected pieces of coloured glass. There are some antique items of clear glass, including a little tumbler etched with a complete Lords Prayer. On the end of one shelf the green pieces are mostly little ink pots of no value, some very worn but giving a delicate concentration of colour. Elsewhere is a complete mixture, maybe a blip for another dreary day?