I love love love my Kendra Scott pieces... so much that I just got my mom some for xmas. The Elisa necklace is a great one, I haven't seen the pave/yellow gold one in person, but do have an Elisa which is not made of precious stones. It's a great size for layering with other necklaces or wearing alone and I've found it super versatile.
I have the Kellie long necklace in gold tone with black stones. I gifted my grandmother the same necklace in silver tone with white stones and it's her favorite! As far as costume jewelry goes, Kendra Scott has great pieces !
I can't decide how I feel about the fine jewelry. I've only seen the items IRL once. I wasn't as impressed with the pave pendants as I thought I would be, but the Elias cuff bracelet was lovely and the Lee drop earrings were really sparkly! The prices are pretty reasonable. I just haven't decided if I should pull the trigger yet! I think the pave collection is only available for a limited time (at least that's what the SA told me), so I guess I need to be more decisive or I might miss out!