All natural double terminated (w/ record keepers) Blue Sapphire (Madagascar)
This would be a good option for a September birthstone piece, though it isn't technically part of my birthstone series.
Brass Wire has the benefits of looking like gold while providing greater corrosion than copper while having the same affordability & durability. However, It's main attribute is being bactericidal, meaning it is antimicrobial - killing pathogens within minutes to hours of contact even against anti-biotic resistant bacteria (hence it's use as doorknobs & musical instruments for hundreds of years).
All of my work is available to be sent back for polishing with the use of my flex shaft. Shipping fees are the only thing required. Email or Text to do so.