Marquise style jewelry designs in New York

Marquise is a prestigious institution located at 366 5th Avenue in New York, offering a unique blend of finance and luxury retail services. Specializing in exquisite jewelry and accessories, Marquise is a go-to destination for those seeking high-end pieces that exude elegance and sophistication. Whether you're looking to invest in a timeless piece or simply indulge in a little luxury shopping, Marquise provides a curated selection of fine jewelry and accessories to suit every taste. Visit us today to experience the epitome of luxury and style in the heart of New York City.

Welcome to Grown Diamond Corporation USA, your premier destination for exquisite lab-grown diamonds and fine jewelry. Nestled in the heart of Queens, New York, at Rockaway Boulevard C/O MA3PL, we redefine luxury with our stunning collection of diamonds that are as unique as you are. At Grown Diamond Corporation, every facet of our diamonds is crafted with precision and purpose, ensuring that each piece is a true masterpiece. Our commitment to quality begins with the careful selection of flawless diamond seeds, which are then meticulously nurtured in our state-of-the-art diamond-growing greenhouses. Utilizing both High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD) technologies, we create diamonds that rival and often surpass their naturally mined counterparts.