School has taught me many things including fractions...but this math problem has one answer! The answer is: as many Half Circle Blanks as you want. You will have a necklace that will be the envy of every mathematician. I think Einstein and Newton would fight over these pieces cause they're genius!!!
You need two equal lengths of chain for each side of your necklace. Attaching with jump rings, add one blank to the last link of the chains. Working your way up the chain, skip everyother link and repeat the process alternating the metal blanks. For example, we did brass, nickel, brass. Add your clasp and you're done! We only used 3 blanks...but make it more dramatic by adding more!
For the earrings, cut 4 pieces of 1 1/4" chain. Use two pieces of chain per earring. Attach the blanks using the same process used in the necklace. Gather the open end of chain with a jumpring. Add to the earwires.