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Natural Diamonds

Doing Good

At Roosik & Co. we work with natural diamonds, because our commitment is not only to environmental sustainability, but to sustainability and social dignity in countries like Botswana, which, no matter how far away, are part of our own human community.


The 7 "C" of Roosik & Co

In jewelry, the "4 C" (cut, clarity, carat and color) are what determine the perfection of a diamond. Thus, the quality of the cut and the purity, the carats and the color of a diamond is what determines that this diamond is especially dazzling and that it stands out for its luminosity. At Roosik & Co we add three more: the triple excellence, the guarantee that everyone is from a conflict-free country and, lastly, a certificate of authenticity and quality. Because we love the jewelry we create as much as you do.


From colorless to yellow or brown, there is a wide range of diamond colors. At Roosik & Co we only work with colorless diamonds (groups D, E, F), making our jewelry even more beautiful.


If a diamond has no impurities when viewed ten times enlarged it is said to be flawless and nothing can alter its optical properties. That's why Roosik & Co always recommends diamonds in the VVS2 and higher category.


Whether the cut is emerald-shaped or shiny round, oval or princess: the symmetry, proportion and polishing of the faces will make the cut of a diamond excellent, reflecting 99% of the light that penetrates it.


One carat is 200 mg, and is the unit for measuring the weight of a diamond. The carat determines the value of a diamond, but it is advisable to choose a size that suits the personality of the wearer.

Triple excellence

Roosik & Co diamonds are always of triple excellence : symmetry , carving and polishing < They are impeccable. Only then will the scattering of the light that penetrates it be complete and the diamond shine like a star.

Treaty of Kimberley

Jordi Rosich - jeweler, nailer, gemologist and designer - personally selects all our diamonds. Roosik & Co only uses conflict-free region diamonds . All our diamond suppliers know and meet the terms of the "Kimberley Treaty" .

GIA Certificate

In addition, all diamonds used are accompanied by a certificate of authenticity , accrediting the guarantee and excellence of the stones. An official GIA (Gemological Institute of America) certificate for all those diamonds over 0.30 carats and a certificate issued by Jordi Rosich, a qualified gemologist and diamond specialist, for all those diamonds under 0.30 carats.

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