I found this coming up in the Fieldings salehttp://fieldingsauctioneers.co.uk/lot/104883'A large late 19th Century Stevens & Williams Arabesque bowl of circular form with a petal edged rim decorated with an applied white crackle finish over the graduated cranberry to clear ground, mounted to a silver plated twin handled stand with fruiting berry feet, width 24cm'
A crackle glass bowl
with a white overlay crackle described as
Late 19th century Stevens and Williams Arabesque
I think there might have been some confusion somewhere in the books between Arabesque (description of) and the range named Arboresque (still to discover what this range might look like but have proposed it is possibly the range we know as Stevens and Williams rainbow).
No reply from Broadfield House on this query and I'm not able to go next week unfortunately (planning now to be there early April)