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Glass Identification - Post here for all ID requests => Glass Paperweights => Topic started by: glassobsessed on January 16, 2017, 06:43:13 PM

Title: Harlequin with aventurine, Caithness, Harland or?
Post by: glassobsessed on January 16, 2017, 06:43:13 PM

A little under 3 inches in diameter (7.5cm), flat polished base, no signature cane. Wondering who might have made it?

John

Title: Re: Harlequin with aventurine, Caithness, Harland or?
Post by: KevinH on January 18, 2017, 12:06:56 AM

With the powdered white ground I would think Paul Ysart. As for which period - not sure.

Title: Re: Harlequin with aventurine, Caithness, Harland or?
Post by: glassobsessed on January 18, 2017, 09:49:51 AM

Thanks for taking a look Kevin, so tricky some of these paperweights...

Title: Re: Harlequin with aventurine, Caithness, Harland or?
Post by: glassobsessed on January 18, 2017, 09:36:39 PM

With UV there is a marked orangey colour to the dome, would that suggest Caithness?

Title: Re: Harlequin with aventurine, Caithness, Harland or?
Post by: KevinH on January 19, 2017, 04:57:34 PM

An "orangey colour" could indicate either PY at Caithness or Harland.

However, in most cases I now agree that the "orange" longwave uv result for PY weights from the Caithness period is actually a distinct "watery" yellow or orange. For Harland weights some people report "no fluorescence colour" but I see an "orangey" colour for most of my examples. although it is not the clear "watery" orange of the PY Caithness weights and certainly not the "yellow" shade of many.

Title: Re: Harlequin with aventurine, Caithness, Harland or?
Post by: glassobsessed on January 20, 2017, 12:20:49 AM

Watery orange is a good description of what this one looks like.

So if made at Caithness possibly mid to late 60s.

The round green blobs (one just right of centre) react to the UV light as well, the only bits of colour that do. They become fairly bright but the green glow is not quite what I would expect with uranium.