Your glass days were amazing, I miss them.
Nobody as you to create the glass effect.

Issabella - thank you very much; yes, I've been with Gimp a while now and those 'glass days' seem so long ago.

Tampering with glass again- here is 'glass folly'

Great!!! it's so attractive your glass outcomes. Please, don't stop creating beauty in your glass items.

Issabella - thank you very much. You wanted more, here is more.

Thanks Wallace.

It must be Spring, on a roll with glass right now. Here is a glass figurine, a ballet dancer.

Loving the glass OMG

Wonderful glass dancer.

Teapot and Issabella - thank you.

Teamouse - Their are a number of elements to produce glass as above; here is a very quick run down:

1. Bevel Reflect Logo (BRL) plug-in - used to create the contoured outcomes. This plug-in uses the ML Bevel Reflect Plug-in.
2. An e-map of mine called "gemclear", used by BRL to deliver a contoured glassy base for the image; I have also created several coloured glass e-maps which I use occasionally
3. A single colour or gradient layer on top of the glassy layer from 2 above, using mostly "burn" mode, but other modes can sometimes be used for added effect
4. Where a see through glass image is required (e.g. post #1000 in this thread), a copy of see through image shape is taken from the background and placed on a layer above in burn mode. That is no intermediate colour or gradient layer.

Continuing to experiment by creating new glassy e-maps, glass brushes and new gradients to apply over the glass layer.

Last one for now, want to get back to portraits

Unfortunately no.
The plug-ins would need a rewrite.

Quietreader is right. BRL is script fu and old but obviously one of my favourites.

BRL is among a number of reasons I am staying with Gimp 2.10.

Well that respite from glass was short lived. Another glass ornament below.

super cool!, top one looks like some infinite hallway shenanigans