I agree about the extenders.
I love bigger jewelry. It looks more proportionate on me and I am in a normal weight range. My gold rings that I bought years ago look too small and cannot be stacked, so I picked up some generic silver stacking rings and gold over silver rings, at a much lower price point than solid gold. If they don't last forever, so be it, I'll enjoy them while they last. I can always add a manicure if I want more bling on my fingers.
I also love statement jewelry as an accessory. The Tiffany statement pieces I love run $12,000 - 35,000, so I carefully select sterling silver or gold-plated items at a much lower price point and they are beautiful. I especially love long station necklaces - very elongating. My love for statement pieces came from reading the blog extrapetite.com, so even very small women like to wear big jewelry.
I love watches with big faces too. So fun! And big chandelier earrings.
This might be an opportunity for you to explore new styles of jewelry and see if you like them.

Go to the jewelry stores and jewelry counters in department stores and try things on, then look in a full length mirror. You may be surprised at how awesome you look with pieces you may have never dreamed of trying.