the suggested date period of 1850s to 1890s may well be correct, but as we discussed earlier in this thread, the particular cutting styles on this glass don't in themselves tell us when this piece was made ……… it's the eternal problem whereby C19 and C20 workers reproduced earlier styles of cutting - sometimes much earlier.
I get the impression that if you take a loupe to most glass that's heavily cut you will find remnants of grinding somewhere within the mitres - hopefully not too much, but it may be impossible to remove all evidence without excessive detriment to the appearance of the cutting.
Also, just to add ………….. I'm not seeing any strawberry cutting/strawberry diamonds on this glass.
The graduated diamonds below the midriff of this bowl are simply 'relief diamonds, which apparently date, commercially, from c. 1780s. Sadly the older the piece of glass then generally the more their points suffer from damage, and obviously, these diamonds aren't really in relief to the surface of the glass - it's just an optical illusion.
Strawberry diamonds start c. 1800, and are additional decoration on the flat table tops of diamonds that are cut - similarly to relief diamonds, except that the four mitre cuts - at right angles to each other - are placed such that the diamond is produced with a flat top and not a point.
It's on this flat top of the diamond that a further (usually sixteen) shallow mitres are cut 'criss-cross' fashion, to produce a series of fine diamonds - doubtless a skilled job.
Scale cutting was used much on earlier drinking glasses to decorate their stems - probably starts c. 1730-1740 - always looks good - and as mentioned earlier, Walsh used this design in the C20.
Try G. Bernard Hughes book 'English Glass For The Collector 1660 - 1860' - mine of information on mostly clear cut glass, of all sorts, shapes and sizes of table glass - it's where it get most of my information from
There are copies currently on Abe Books for less than a fiver - you couldn't get a better bargain than that!!
Anyway, I'm still no wiser as to the date of the glass shown here - it might even be early C20