Sometimes less is more. This is not one of those times. So stack those bracelets, bring on the big necklaces, and don’t forget to add a cocktail ring or two (or three…or four).Photographs by Greg Sorensen. Styling by Brooke Magnaghi.    PUMP UP THE GEMOur color theory? You can never have enough.Ring in 18k gold with fire opal, $4,850, ring in 18k gold with yellow sapphire, $9,500, Elena Kriegner, NYC, 212-643-0060, elenakriegner.com; Crownwork ring in 18k gold with citrine and diamonds, $4,235, Crownwork Dome ring in 18k gold with amethyst and diamonds, $4,950, Ray Griffiths, NYC, 212-689-7209, raygriffiths.com; ring in 18k gold with aquamarine and diamonds, $11,900, Suna Brothers, NYC, 800-456-7862, sunabros.com; Oracle cuff in brass with moonstones, $425, Luna Reveal cuff in brass with moonstone, $385, Moon Age Dream necklace in 18k gold–plated brass with moon