JHP will introduce polished surfaces and glass to the Covent Garden branch of the store to incorporate the French trader's "quirky" creative input.
An eye-catching feature wall will be used to display the jewellery pieces, while creating mini vignettes in a setting that changes colour with each passing season.
A neutral backdrop has been created to showcase the products because of the intricate design of the merchandise.
Raj Wilkinson, joint managing director of JHP, said: "We worked very closely together with the founders to incorporate their own quirky design input.
"We believe together we have created a store that sets the scene for the company's beautiful products."
JHP believes that by using polished surfaces and glass, the store will have a cool and restrained ambience but with some individual flashes of creativity and individuality.
The design consultancy is continuing to work with Les Nereides on evolving the store concepts and format.
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