Catching up this thread, and I see reference to colored gemstones.
@chiaoapple
I love Bayco too; they make gorgeous pieces. My other favorite brand for colored gemstones is JB Star. I love love love their rings. Their pieces are one of a kind, handcrafted in platinum, very limited production (e.g. not mass produced). The focus is on a fine quality center stone which is what I love for colored gemstone pieces (kind of the old world Elizabeth Taylor look). They will also do custom pieces based on the stone you want as all stones are different. Here is their website:
www.jbstar.com
That said, if I may offer my thoughts...
I've seen the jewelry pieces you buy, so I think I have a feel for your style & preferences. I feel you prefer more artistic and feminine designs vs. bold simple designs. Hence, I'm not sure Bayco, JB Star, or nIrene Neuwirth (maybe her) is your style. I may be wrong of course, and this is just a guess.
Nevertheless... I have an idea to share with you!
On the premise you love artistic and feminine designs, how about a headband? Done right, headbands can be stunning.
I love the Chaumet Laurier headband. It's artistic and beautiful, yet the look is timeless and can be worn with anything. Yes, it's sparkly diamonds, but at its core, it's just a headband, so it's definitely an everyday piece.
I wish I was a headband gal, but I am not. However, I can totally see you wearing this piece. It's so beautiful, at least to me.
https://www.chaumet.com/us_en/laurier-head-ornament-084319
Tiffany makes a headband too from their Victoria line, but to me, Chaumet's comes across more artistic and elegant.
www.tiffany.com
For Chaumet. there is also a matching Laurier bracelet, and I recall you like bracelets. Hence, you can make a set.
Chaumet also makes colored gemstone pieces, but their pieces with large center gemstones are mainly rings. The necklaces, bracelets, and earrings have small stones, but depending on your preference, you might find something.
I love their Josephine Aigrette Imperiale line, and it is offered in colored gemstones. Here is a link in case you might see something you like:
Just my two cents... Good luck gemstone jewelry shopping!