Januka was established in 2012 by Jo Nakamura, who learned product design in New York and in the Netherlands.

The band concept is "A little bit strayed away from the manual" creating pieces that aren't necessarily playing by the rules of classic techniques and materials.

Square diamond slice necklace, shown from the front.

Square Diamond Slice Necklace

A dark gray diamond slice set in a square gold window.

Diamond band necklace, shown from the front.

Diamond Band Necklace

A diamond-shaped dark gray diamond set in Januka's signature band setting.

Rectangular diamond slice necklace, shown from the front.

Rectangular Diamond Slice Necklace

A salt and pepper diamond slice set in a rectangular window.

standing gold ring with a diamond set into the curve of the band

Diamond Round Ring

Set seamlessly into the curve of the band, this white diamond is elegant and beautiful. 

front on view of diamond ring with a space in the front and a dynamic design around the diamond

Champagne Diamond Round Ring

Always seeming to defy gravity, Januka's newest ring design hugs the finger and allows the diamond to lift up off the hand.

front view of a round yellow gold hole has a diamond set floating into the middle of it. there is a medium wide band that the setting is attached to and the gold is matte.

Diamond Position Ring

A floating princess cut diamond is expertly set into a ring of yellow gold. The perfect off-beat stacking ring, or engagement ring.

front view of a small organically shaped oval pink sapphire has a thin band of yellow gold around the middle of it, which binds it to a thin yellow gold band ring.

Pink Sapphire Band Ring

An east-west set pink sapphire is expertly set onto a band with just a thin slice of yellow gold.

three quarters of a circle of lapis stone with a post back attached to the open quarter

Lapis Slice Earring

Lapis circular slice single stud earring with 10k yellow gold post.