The most secure clasp for a pendant

Elkka,

it seems to me your headache might be fixed by more of a heavy
selling session with your customer. Gather some pictures, or
websites, or catalogs, and Show him the many options. Stress the
problems with faux leather, such as unknown durability, your lack of
control or guarantee for it, what it will do when soaked with
perspiration, etc. Let your mind awe, and his be shocked. Then show
him how wonderful the black rubber looks with the 18k. Then show him
the marvelous “he-man, masculine, fashionable” cables available too .
Distract him from that faux leather of doubtful pedigree and sell
him on something that will work and survive. If you can somehow get
through to him the fact that he needs to honor your pendant by
hanging it appropriately, he might even understand that putting it on
a gold chain is the best possible “investment”. This is a creative
selling project for you. I hope you have a great many more. It’s a
learning process and part of the job of getting your jewelry out
there. Forget headache and rise to the challenge with a smile.

Good luck wishes,
Patricia.

Stress the problems with faux leather, such as unknown durability,
your lack of control or guarantee for it, what it will do when
soaked with perspiration, etc. 

Why not use a good old ‘leather shoe lace’. They are available in
long lengths & last a looong time even when used in boots that are
used on a daily basis. I’d imagine a suitable dye could be found if
the natural color of the lace isn’t acceptable.

Dave