Possibly for a special occasion, but a little bling will pick you up on an ordinary day too.
I found several rhinestone ties once I started looking. Some were very colourful, with lots of patterns to choose from. But, I picked these two for their low key fashion flair.
My favourite comes from Lancetti:
The tie above comes from Exotiq Apparel.
There are plain ties, no pattern just rhinestones in a basic column and row. I found plenty of those on Etsy. But, they seem just a little too ordinary, like something done as a craft project. I think these ties look like something you chose to wear. A little boldness and risk without going overboard.