In keeping with tradition, Kate received a yellow gold wedding band during her marriage ceremony to William.
At the 2:30 mark the ring makes an appearance.
Kate has worn it ever since. It’s made from 18k Welsh gold which is already owned by the British royal family.
The gold is of a soft, bright yellow which is a true yellow. It doesn’t appear to have any orange or dark yellow tones.
The band is slim, smooth and doesn’t appear to have any engravings. If it does, it most likely is on the inside of the ring, since I cannot detect any engravings on the outer surface.
It is not exactly known which jewelry company made Kate’s ring. Thanks to My Small Obsessions for the new information! The ring was made by Wartski, a British family firm.
I found a Welsh company which claims to use the same gold that has been used to make royal wedding rings for generations.
Clogau offers wedding rings made in the style of Kate’s ring. The rings are a part of the Windsor collection. Link can be found here.
You can read more about their connection to royal wedding rings here.