Paradise actress Bloom, 30, opted for the brand's Anemone Floral Basket Diamond Wedding ... her ring — a 4-carat, emerald cut, flawless diamond set in platinum with 18-carat yellow gold inlay.

It's long been tradition that royal wedding rings are made out of the same nugget of Welsh gold from the Clogau-St David’s Gold Mine in Wales, dating back to Lady Elizabeth Bowes-Lyon in 1923.

The newly married couple got married Saturday, March 15, in Xpu Há, Mexico — and now the brand behind their wedding jewelry is opening ... with 18-carat yellow gold inlay.