Low-priced stock that sells at less than $1.00 per share. Often highly-speculative and volatile, such as start-up mining companies. While, in general, penny stock are considered high-risk securities, some penny stock mature into less-speculative investments. All penny stock are traded over-the-counter.
In its natural form, cork is also a very good fire retardant, although cork dust is actually extremely flammable (because here the cell structure has been broken down). Impermeable: Cork has a magic chemical in its cell membrane that makes it completely impermeable to liquids and gases.
How to Burn a Design in a Cork Coaster. Turn a simple cork coaster into an elegantly designed piece of home decor by burning a decorative design into the cork surface. You can use any simple line drawing or simple illustration to trace onto the coaster. Personalize the coasters using a monogram initial for decorative gifts.