Victorian ruby, opalescent, & uranium glass crimped bowl

This Victorian glass bowl shades from pale, yellow - green to a band of milky opalescence, then to ruby at the crimped top rim. The yellow - green contains a small amount of uranium, which makes a weak glow under UV light. It measures 10.3 cm tall, 17.8 cm across the double crimped top rim, & 5.2 cm across the base, which has a rough, snapped pontil mark. The bowl has a moulded pattern of swirling horizontal ribs that changes to lines of small dots towards the top. To me, the shape of this item could easily be a lamp shade as well, if there was an opening in the base. Likely that the mould was used for both purposes. Could be Bohemian or English, but I think most likely Bohemian.