Hi
Well, here is an unusual little pair of low candlesticks or holders of mine chosen because they have large diamond cut like OP'S nice bowl, also the broad flutes at the foot. In these oval and circular forms, you get these wonderful curves, geometric effects, as you can see in the picture of the base. To reflect a much light as possible. As to judging by colour and wear, this pair have mossing to the bases, always a good sign of age, also, although an identically cut pair, they are individual hand made items with variation in size and construction,one taller than the other.
With a single piece of old cut glass like the bowl just having a good close look at the cutting will show slight irregularities, 20thc examples won't, they will be a lot slicker, more perfect.
Regards
Rose