Kelia Toledano and Kelly Souied, childhood friends from the same street in Paris's 16th Arrondissement, founded Rainbow K in Paris in 2019 after both first built careers in finance and economics. Souied trained as a gemologist in Ramat Gan to study at the Israel Diamond Exchange, and pairs that technical eye with Toledano's Art Deco-leaning taste for antique jewelry, landing the brand somewhere between vintage revival and something more irreverent.
Rainbow K

Jewelry
The founders describe the French fine jewelry market they grew up around as almost entirely classic, which is precisely what Rainbow K was built to push against. Diamonds and colored stones, including sapphire, emerald and onyx, get set into shapes borrowed from Art Deco without being period pieces.

Elysabeth 18K Yellow Gold Diamond Ring
Rainbow K

Drop Alliances 18K Yellow Gold Diamond Ring
Rainbow K

14k Yellow Gold Grace Piercing Single Earring
Rainbow K

18K Yellow Gold Diamond Tube Ring
Rainbow K

Ball 14K Yellow Gold Diamond Necklace
Rainbow K

Double Piercing 14K Yellow Gold Diamond Ring
Rainbow K

Eyet Nano 14K Gold Diamond Single Earring
Rainbow K

Nano Piercing 14K Gold Diamond Single Earring
Rainbow K

14k Yellow Gold Nano Piercing Single Earring
Rainbow K

Prestige 18K Yellow Gold Diamond Ring
Rainbow K

Ball 14K Yellow Gold Diamond Bracelet
Rainbow K

Prestige 18K Yellow Gold Diamond Bracelet
Rainbow K

Ball 14K Yellow Gold Diamond Single Hoop Earring
Rainbow K

Piercing Large 14K Yellow Gold Diamond Single Earring
Rainbow K

Waterfall 14K Yellow Gold Diamond Necklace
Rainbow K

Illusion 18K Yellow Gold Diamond Ring
Rainbow K

Lady 14K Yellow Gold Diamond Ring
Rainbow K

Ball 14K Yellow Gold Diamond Ring
Rainbow K

Ball 14K Gold Diamond Bracelet
Rainbow K

Piercing 14K Yellow Gold Diamond Ring
Rainbow K

Piercing 14K White Gold Diamond Single Earring
Rainbow K

XL Bamboo 18K Yellow Gold Diamond Bangle
Rainbow K

Cyborg 14K Gold Diamond Single Earring
Rainbow K

Piercing 14K Gold Diamond Single Earring
Rainbow K
More Jewelry
Souied's gemological training keeps the stone-setting technically serious even as Toledano's design instincts push toward bolder, less classical silhouettes. That split between the two founders, one trained in diamonds, one trained in taste, is basically the whole business model.
Our honest take
Two childhood friends splitting a jewelry brand into a technical half and a design half is a clean story, and it happens to be the true one here. The Art Deco framing can tip toward pastiche in weaker pieces, but the diamond work is genuinely credentialed, not just borrowed vocabulary.










