It depends on what you mean by Celtic.  There are some tiaras which feature the national flowers/plants so shamrocks for Ireland, thistle for Scotland, and leeks for Wales.

The Diamond Diadem has shamrocks and thistle.  I never realized that it didn’t have a flower for Wales on it before.

The Hesketh Floral Tiara features shamrocks and thistle so again no Welsh representation.

Holly & Thistle Tiara by Mellerio

Thistle Tiara by Axenoff

Dufferin & Ava Shamrock Tiara

Hanover Shamrock Tiara

Prussian Clover Tiara

Savoy-Genoa Clover Tiara

There are more clover and shamrock tiaras but this was getting too long.  Now I feel bad for Wales because I couldn’t find any leek tiaras or even any daffodil tiaras which is a newer symbol some people use instead of the leek.  

@reginamuses​ Hey! Sorry I wasn’t clear 🙈

I was talking about Princess Sarvarth, Princess Badiya’s mom, and her tikka and how it couldn’t make my list. She married Prince Hassan bin Talal in Karachi in 1968 and idk what i was expecting but it wasn’t what I found. 

This is the shot I found, and you can see she has a middle part in her hair but her tikka is just off to the left, too close to her jhumar. And then her jhumar! It’s not far back enough and too low! It just wasn’t working. 

Then I found this one color shot where the tikka is perfectly in the middle and the banarsi is beautiful, but is she wearing blue eyeshadow??? 

For Princess Badiya’s mehndi, I thought her tikka was actually a matha patti and she layered a jhumar over it which was a bit 😬 but I digress