The color scheme in this is very basic - red, gunmetal gray and silver.
The centerpiece is a faceted ruby quartz; the other red beads are Czech fire-polished faceted glass and red glass rondelles. They are accented with rondelles of non-magnetic man-made hematite and silver-plated bead caps. Between these are small lead-free pewter spacers. The whole is finished with a silver-plated toggle clasp.
The necklace is about 18 inches long, and has some heft to it - it weighs a couple of ounces. This is primarily because of the hematite.
I chose to pair these particular components because I like the gunmetal color of hematite, and the combination of charcoal gray and red.
The prefix "hema-" means blood (red, "hemaglobin" etc) and the mineral hematite leaves a red streak in a streak test. So, I thought it would be interesting to combine the two.