Posted 6 years ago
Bottlefly
(59 items)
Light amethyst The Duffy Malt Whiskey Company. Normally found in amber. Common bottle....not so common color.
Duffy Malt Whiskey | ||
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Duffy Malt Whiskey | ||
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Posted 6 years ago
Bottlefly
(59 items)
Light amethyst The Duffy Malt Whiskey Company. Normally found in amber. Common bottle....not so common color.
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Think I met Duffy back in the 80's. We didn't keep in touch.
It would have started out as clear, but the manganese in the glass reacts under the sun's UV-- even 5 feet under ground in some areas, as UV penetrates the soil-- and causes it to turn pink/lavender or "amethyst" as the proper collector colour. The official term is SCA, or sun-colored amehyst, and is a natural product of radioactive decay.
SpiritBear.....
Thank you for that information. I honestly didn’t know it was possible to happen while the bottle was still underground.
This bottle is almost always found in amber, so even a clear one would be rare.
I found it surprising as well when I was digging up SCA glass 5 feet down. Even bottles sitting in dark attics or at the bottom of shallow lakes have it happen at times. The UVC of the sun often penetrates that which blocks the UVA and UVB of sunlight.