The design of the detachable base of Girls of Great Britian & Ireland tiara is often referred to as "diamond & dot" pattern and was frequently used by Garrards.

Queen Mary with the base of her tiara:



Duchesd of Roxburgh's diamond tiara also featured a similar base.



Queen Mary had another tiara with similar base design. It was inherited by the Kents and worn by the current duchess at her wedding.





The tiara was remodeled as a fringe but the base design was kept as is: