Frank & co. X Monica Ivena Love Poetry Prismata Promise Ring Rings of color, promising a diverse array of colors in an ever changing manners. That the spirit embodied in our Prismata Promise Ring. Crafted in 18k gold with a total of 4 grams in each ring. 56 pcs F VVS diamonds carefully set by Frank & co. master artisans to reflect lights and reveal a prismatic play of lights. This serves as a stunning backdrop to the cushion cut Pink Sapphire, a color that represents Monica Ivena feminine and whimsical signature in design.