An industrial material such as concrete seems unlikely for jewelry, but it works very well! It is relatively lightweight, and very durable. It is great for personalized adornment, because you can embed virtually any charm, bead or found object you want.
Difference Between Cement and Concrete
Cement is a powdered ingredient (mostly calcium silicates) used in concrete. It is strong, but brittle and susceptible to scratching. When mixed with water, it undergoes a series of chemical reactions and slowly crystallizes into a strong, interlocking form. Concrete is a mixture of cement, an aggregate (sand or gravel) and water.
Jewelry Grade Concrete
EuroTool created EnCapture Artisan Concrete specifically for jewelry artists. This new kit makes it easy for designers to create small mosaics and concrete jewelry. For information on making your own concrete, visit Ganoksin.
Creating with Artisan Concrete
Prismacolor colored pencils can be used to color the surface of concrete! To prepare the surface, wet-sand it using fine-grit, wet/dry sandpaper and let dry for 24 hours. To seal the color, spray with several light coats of Krylon UV sealant.
Safety When Using Concrete in Jewelry
Always use disposable cups and utensils. Throw away unused concrete; do not wash it down the drain (it will clog pipes). Wear a respirator, safety glasses and gloves.
Have Fun & Happy Creating!