Adding too many types of embellishments can become distracting. Using only two sizes of embellishment balls will add to the design but not distract from the stones. Using more than two sizes of balls can make it more time consuming to decide where to place each one, so keep it simple. After auditioning several different combinations, it seemed 18 gauge Argentium wire cut 3/8" and 5/8" lengths and then balled were visually the best combination to use.
Odd numbers always are more visually appealing than even numbers. Strictly following Odd Number Rule when making these bracelets is not necessary as long as there are enough Odd Numbers to keep the eyes happy. To follow that rule, possibly use just the smaller balls so three can be stacked in triangles randomly around the links, with sets of one and two interspersed as well.
Since the balls do not need to be perfectly sized, use a ball point pen to draw the needed length on a finger. Use that drawn length to "measure" the wire. Remember to cover the wire end when cutting so the little piece of wire does not go flying. How many to cut? Figure four of each size for each link, plus twenty extra balls because each rock will require different random placement of the embellishments as well as more or fewer balls. There will be balls left over, but they will quickly be put to use on other projects!
This is one of those do as I say and finally as I do tips-lol! I started making the balls on my old magnesia soldering block-the one I use when spraying a piece with flux to prevent fire scale. See all that black build up residue on the block in the first photo? It should have been taken care of before starting. It is fast and easy to "sand" the block off on a clean sidewalk-second photo. It is so nice to work on a clean surface that things won't stick to-third photo. Also in the third photo, the block is raised a bit. Make sure that when doing such time consuming, repetitive, mind wandering tasks that the surface height being worked at is comfortable. It is too easy to start hunching over, putting stress on your neck, shoulders, and back.
Unfortunately, I took the photos before I cleaned off the block. The flat bottom of balls made on the magnesia block have more surface area to securely solder to a backing, making them less likely to be knocked off during wear. Making balls on a charcoal block with shallow round divots impressed into it will result in more rounded balls and less cleanup.
A small blazer torch is a great choice for making these balls. Be careful. My brick is on an old cake pan lid on a turntable. The high lip of the lid stops any hot metal balls that are pushed off the block by the force of the flame from ending up on the floor, my feet, my work surface, etc., IF it is low to the lid. When raised, more care needs to be taken.
The photos are a time lapse of how Argentium wire balls up. The tip of the blue part of the flame is never touching the wire. When the wire is in a ball, a film will start to "peel" back. Remove the flame immediately and go to the next wire piece.
It is easy to just run the bottom of each ball across 320 grit sandpaper placed on a bench block to remove the solder block residue to make a clean shiny surface for soldering.