BlacknTan
Well-Known Member
I bought a La Grosse Blanche last year from a well respected vendor. I read on coticule.be all about the way the turn color when exposed to sunlight, or air, or both. Mine never did.
We endured a long, and very hot summer, so this particular stone spent a few days on the deck in full sunlight. Still no darkening I could see, so it got put away because I became enamored by the La Petit Blanche I bought from my friend Gary. I never had any doubts that the stone was what it was sold as, and really didn't place that much importance on it, but I just wondered why...
I decided to buy boxes for all the stones that did not come with one, and the boxes arrived today. I found the La Grosse Blanche to place it it's new home, and I was astounded to see a darkened stone!
Now, I recall from my readings here that it's uncertain just why this layer darkens when exposed over time, but to me, the darkening was reminiscent of good old rust. I also claim no expertise in the primordial soup that eventually formed our coticules, and I have no degrees in chemistry or geology, but i came to wonder if perhaps minute amounts of iron could be mixed in this particular vein that could possibly account for the darkening.
Any thoughts?
We endured a long, and very hot summer, so this particular stone spent a few days on the deck in full sunlight. Still no darkening I could see, so it got put away because I became enamored by the La Petit Blanche I bought from my friend Gary. I never had any doubts that the stone was what it was sold as, and really didn't place that much importance on it, but I just wondered why...
I decided to buy boxes for all the stones that did not come with one, and the boxes arrived today. I found the La Grosse Blanche to place it it's new home, and I was astounded to see a darkened stone!
Now, I recall from my readings here that it's uncertain just why this layer darkens when exposed over time, but to me, the darkening was reminiscent of good old rust. I also claim no expertise in the primordial soup that eventually formed our coticules, and I have no degrees in chemistry or geology, but i came to wonder if perhaps minute amounts of iron could be mixed in this particular vein that could possibly account for the darkening.
Any thoughts?