Necklace

Gemstones: The necklace prominently 14 k white Gold over silver features vibrant yellow center stones, likely fancy intense or fancy vivid yellow diamonds, interspersed with colorless (white) diamonds.
Cut: The yellow diamonds appear to be cushion-cut or radiant-cut, while the white diamonds are a mix of shapes, possibly round, marquise, and pear shapes, used as accents and in the surrounding halo settings and links.
Setting: The design incorporates secure prong settings for the main stones and pavé settings for the surrounding accent diamonds, which maximizes brilliance and sparkle.
Style: It is a sophisticated, statement-level piece often associated with high-end jewelers and events.
These types of high-carat yellow and white diamond necklaces are often certified by gemological institutes and can range widely in price depending on the carat weight, color intensity, clarity, and specific design.