Yes Keith, i have not been there for about a year and the place is stuffed with glass, most of which was there a year ago, the place is better than a museum for having a look at all kinds of glass and handling it, these were only 40 quid for the three which i thought a good price, although i would rather of paid 4 quid

Christine they do look very similar to your link thanks for that.
As to the irridescence it's hard to know, i think the pink trailing gives the optical illusion of irridescence something similar in another trailed bowl i picked up recently which is cranberry with amber trailing.
This one is a bit bigger, 4 3/4 inches in diameter, 2 1/2 inches in height.