Topic: Help identifying fragments for archaeological study

[Dragonwoman]

Hi!
I'm new at glass (other than glass bottle) identification, so please be patient with me. Any knowledge/website you could share would be much appreciated.
The fragments are of the same vessel/container. There are two separate layers of glass: one being a hunter green, the other an opaque/white glass. The later is the underlying layer. In effect, it looks similar to a Mother of Pearl, but without the diamond-esq pattern. There's no decoration or adornments.
There's really no way to narrow the context of where these fragments were found. Below is the flickr link for some photos.

http://www.flickr.com/photos/99670823@N04/


Thank you in advance for the help,
Lacey

[Lustrousstone]

Where were they found?

[Dragonwoman]

A site in San francisco

[Dragonwoman]

Date range anywhere from 1870s through to mid 20Th Century

[SantaR]

Cool, where in SF?  I used to live there, in the Inner Sunset.

[Dragonwoman]

It's in the Rincon Hill neighborhood

[Fuhrman Glass]

These appear to be remnants of a green cased glass lighting shade of some sort. these were used a lot in fixtures and lamps. The one piece appears to have an edge that suggests that it was made in a mold and the info on the date of their manufacture is dead on in my opinion.

[SantaR]

Ah yes, tons of new condos going up there.  What was there before?  Some good houses there originally so it could well be from a light fixture in an expensive house.

Keep us posted.

Santa

[Dragonwoman]

I figured the date range wouldn't be helpful (I am assuming that's what "dead" means). Those are the dates for the possible structures on the site. That's all I can go by.

The info is really helpful. Points me in a good direction. Thanks

Yeah, Rincon Hill was once where the wealthy used to live post- gold rush in SF. One family lived there for many years, even after the wealthy folks made a grand exodus from that neighborhood after a street (don't recall which) was cut through the hill, allowing greater access for the masses. Their lot burned during the fire of 1906. Later a factory set up shop.

[Ivo]

I figured the date range wouldn't be helpful (I am assuming that's what "dead" means).

"Dead on" is British for "accurate"