Roosik Diamonds

The 7Cs of Roosik&Co

In jewellery, the so-called “4Cs” (cut, clarity, carat and colour) determine a diamond’s perfection. The quality of the cut and clarity, a diamond’s carat weight and its colour all make a diamond especially brilliant with outstanding luminosity. But at Roosik&Co. we’ve added another 3 features to the 4Cs, thanks to the triple excellence of all our diamonds, the conflict-free diamonds and the guarantee&certificated provided by Jordi Rosich, gemologist expertise, personally selecting all the stones we use. Because we love the jewellery we create as much as you do.

1 Cs GIA · Colour

From colourless to yellow or brownish, there’s a wide range of diamond colours. At Roosik&Co. we only work with diamonds Colorless (groups D, E, F), making our pieces of jewellery even more beautiful.





2 Cs GIA · Clarity

If a diamond has no impurities when viewed under ten times magnification, it’s said to be flawless and nothing can alter its optical properties. That’s why Roosik&Co. always recommends diamonds from the VVS2 category and above.





Very very

slightly included

Very very

slightly included

3 Cs GIA · Cut

Whether a diamond’s cut is emerald, round brilliant, oval or princess: the symmetry, proportion and polish of its different faces ensure a diamond’s cut is excellent and reflects 99% of the light that shines on it.

4 Cs GIA · Carat Weight

One carat equals 200 mg and is the unit used to measure the weight of a diamond. A diamond’s value is determined by the number of carats but it’s always better to choose a size that matches the personality of the person who’s going to wear it.

5 Cs ROOSIK & CO · Ideal cut diamonds

Roosik&Co.’s diamonds are always triple excellence: their symmetry, cut and polish are impeccable. Only then can the stone completely scatter the light that penetrates it, making the diamond sparkle and shine like a star.

6 Cs ROOSIK & CO · Confilict-Free diamonds

Jordi Rosich, a jeweller, setter, gemmologist and designer, personally and carefully selects all the diamonds for Roosik&Co. jewellery. Moreover, Roosik&Co. only uses diamonds from conflict-free regions, All our diamonds suppliers fulfil and meet the conditions of the “Kimberley Treaty” (certification system for international trade of diamonds not from countries in conflict). Discover here.

7 Cs ROOSIK & CO · Certificate Diamonds

All the diamonds used in Roosik&Co.'s jewellery are accompanied by a certificate of authenticity, certifying the guarantee and excellence of the stones. All diamonds over 0.30 carat have an official GIA certificate (Gemological Institute of America). All diamonds below 0.30 carat have a certificate issued by Jordi Rosich, a qualified gemmologist and diamond specialist.

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