An heirloom-worthy opal ring, this setting is understated yet timeless with a one-of-a-kind opal center. One-of-a-kind "Toujours" opal and diamond ring in 18K yellow gold, $5,250, jemmawynne.com. SHOP ...

The 14-karat rose gold-plated band gorgeously compliments the oval-cut green crystals, which are framed by a clear pavé halo. Shop the look in select whole and half ring sizes 4.5 through 9. $165 ...

Opal earrings are a stunning piece to add to your jewelry collection. That said, opal jewelry ... Macy’s Lab-Created Opal and White Sapphire Square Stud Earrings in 14-Karat Rose-Gold-Plated ...