Recently, I resorted my entire collection of seaglass. Now that the summer is over, there is “less” to do on PEI and I needed a challenge. Sorting seaglass by colour is not as easy as it seems. After awhile the blue and greens and near-whites all blend in. The pictures I will feature over the next few days are 3/4 of the way into the process.
Click on the picture for a bigger version. Here we have some greys, almost yellow, pink, aqua, dark blue (cornflower and cobalt), red and lavender. So yes I am proud to day I have several pieces of red glass and some pink. I don’t think I have any yellow glass yet, just dirty glass that has been stained a yellowish colour.
Did you notice in the blue that I have the bottom of a noxzema bottle? Here it is closer up. I actually have two pieces with most of the word Noxzema on them. I also have found a piece that says “seltzer”. I gather that is from a blue Bromo Seltzer bottle. It is fun to see where our glass originated. . . more on that in another post.
But what about this lavender glass? That is another story all its own. Clear glass actually has a bluish tint. In the 1920’s, manganese dioxide was added to glass to counteract the bluish tint. Sometimes, MORE Manganese dioxide was used to actually create a lavender coloured glass. We later discovered that when exposed to UV rays, the manganese in glass makes it turn purple. It inherited the name “lavender glass” Now, different colouring agents are used to make clear glass.
So you might say “like carbon dating”, we can tell how old glass is by how purple it is. Not really. it depends on two factors: how much manganese was in the glass in the first place, and how long the glass has been exposed to UV rays. So I suspect I have some purple glass from the 1920’s but cannot ever really be sure.
Come back soon for another colour discussion.
UPDATE!! I have found an article talking about FAKED lavender glass – what a shame. That is probably what I have and would not be able to date it accurately as OLD 🙁