Marco Bicego Lunaria 18k yellow-gold and aquamarine necklace, $19,440, at London Jewelers, 2 Main St., East Hampton, 631-329-3939, , marcobicego.com.
Page Sargisson 18k rose-gold ring with yellow diamonds, $4,250, at Jennifer Miller Jewelry, 55 Main St., East Hampton, 631-329-9061, jennifermillerjewelry.com , pagesargisson.com.
Sara Weinstock 18k yellow-gold, diamond, turquoise, and chrysophrase earrings, $6,750, at Mayfair Rocks, 19 Main St., East Hampton, 631-329-8444, saraweinstock.com.
Jacquie Aiche 14k rose-gold, pavé diamond, and freeform watermelon tourmaline cuff bracelet, $18,750, at the pop-up boutique Planet Blue, 50 Newtown Ln., East Hampton, 631-604-6238, shopplanetblue.com, jacquieaiche.com.
Bizzotto Rainbow necklace in 18k yellow-gold with multicolor corundums, from $1,300 to $2,500 (depending on length), at London Jewelers, 47 Main St., Southampton, 631-287-4499, londonjewelers.com, bizzottogioielli.com.
