Thread: Coticule Advice

The price of coticules is usually dependent on the size shape and degree of flaws in them. To get a larger size stone free of any flaws would cost a real bundle. The key is to run your fingernail or a thin blade over the stone and you should not be able to feel anything. If you can send it back. If you can flex the stone at the crack also send it back. There is a difference between a flaw like a vein running through it and an actual crack or fissure. A vein is fixed and will never spread while a crack may.

Send it back! This crack will only get bigger, eventually the top will come off and you'll be left with a wortless bit of coticule and a piece of slate.
My coticule has minute hairlines in it but your picture shows a serious crack.

If they won't take it back, you MAY be able to extend its life by using the Hot Stuff CA. It's water-thin and it will cure without expanding, so it's an excellent choice to seal that crack.

Yep, I hadn't looked at the pic. Thats definitely a crack send it back the stone will self destruct on you especially with water getting into it.