Tourmaline is known as the gem of love and commitment. Buy her a pair of pink tourmaline earrings to seal the deal! Durable and affordable, a pair of blue topaz earrings are an excellent gift for a woman with blue eyes, or anyone who enjoys the beautiful color of blue topaz. The unique icy blue color of aquamarine looks ideal with any complexion and eye color, making a pair of aquamarine earrings a perfect gift.