All I have is an image of drawings of lampshades reproduced in the book "SCotland's glass", from the Holyrood Glassworks Venetian designs, copyrighted from the City of Edinburgh Museums and Galleries, in relation to Jenkinson.
The handwriting beside the images is not easy to read, even with my best glasses and a magnifier.
The designs themselves may well be consistent with the design of these plates - there is coloured trailing on rims and throughout the pieces, I can find no mention of aventurine though.