Alan

It was added for specific effect. Opalescent glass was first formulated by glass makers for molded glass.

There are two basic answers: Opalescent glass is intentionally chemically formulated to achieve the opalescent effect. The chemical approaches to this were varied over time. Various aluminum compounds were normal as were some flourides. The "effect" is caused by visual perception of the diverse optical frequencies that are close to the visual wavelength perception of the human eye.

Ric, I am very sorry for your loss.

It looks right to me.

Its a coreless swirl.

I imagine that they will accept donations for the displays. The public wouldn't know and Akro corkscrew from a Indian - or care.

I can't get enough of them.

What does a water wheel have to do with a glass furnace?

Go in a Rock & Mineral gift shop and watch the parade of people that come in looking for various crystals to heal specific ailments, disease and pains. Its not just one or two people.

Does the Lion have a club?

The brown base Emerald green Ravenswood is a different type from the light brown, light green Ravenswood.

On the subject of "insides" - here is a photo of a broken Akro milky oxblood - exterior and interior. Sorry the focus is off:

Contemporary or reworked.

Mike Cosentino used to make cases like that and sell them at shows. I still have a few (I think they are empty now).

Those aren't jumping out at me as MK. The one on the right looks a bit Pelt-ish.

I think you're onto something!

Out-of-focus pus yellow?

About 15 years late for that party.

I remember when red micas and Sulphides were The Hotness - and few people wanted machine mades.

The bag clip is almost as interesting.... as it suggests a modern production.

You might ask Patricia. I assume that is who you bought it from?

My opinion as a long-term handmade collector and as a person who has cane-cut experience in the studio: ........................ (Unfortunately, I have chosen to remove this content due to unchecked behaviors by others on this board. I will not insult or attack others and I expect the same from them. My apologies to those who will not benefit from it in the future.) If you don't approve of members attacking other members - you might mention it to the moderators.

I would prefer not to say in open forum.

(Unfortunately, I have chosen to remove this content due to unchecked behaviors by others on this board. My apologies to those who will not benefit from it in the future.)