Smokey quartz may seem like a strange choice for expressing love, at least at first, but its subdued, always-perfect good looks prove to be the perfect way to celebrate a relationship that’s steadfast and that brings out the best in you. This gemstone lives up to its name as it sparkles with a brownish-gray hue that brings to mind a soothing, smoldering campfire and adds a hint of mystery to your jewelry collection.

The Crown Heart Smokey Quartz and Diamond Pendant is a lovely example of this gem’s understated intrigue. A 10mm heart-shaped smokey topaz is placed in the center of a unique, airy, 14K white gold crown, celebrating the one who rules your heart. Filigree-like heart shapes constitute the points of this crown, while three small diamonds serve as accents.

Pink topaz is bold yet feminine, providing unexpected, dazzling color with a touch of a sweet yet outgoing personality. It’s simultaneously girly and grown up, with a sophisticated sparkle, and pieces that feature it are perfect ways to demonstrate that your unabashed love. For instance, the 4.75 Carat Heart-Shaped Pink Topaz Pendant in 14K White Gold features a sizeable heart of pink topaz that will leave no question about how you feel. Accented with diamonds placed in a graceful, asymmetrical setting, this pendant includes an 18” chain so that it’s ready to slip around that special someone’s neck.

Opal has an iridescence that makes it unique among gemstones. Pliny, the Roman philosopher, raved about the beauty of this gem:

“Made up of the glories of the most precious gems, to describe them is a matter of inexpressible difficulty. For there is amongst them the gentler fire of the ruby, there is the rich purple of the amethyst, there is the sea-green of the emerald, and all shining together in an indescribable union. Others, by an excessive heightening of their hues equal all the colors of the painter, others the flame of burning brimstone, or of a fire quickened by oil.”

Pliny wasn’t too far off when he described the opal as having a multicolored allure. This stone appears to change color depending on the angle at which it’s viewed. The Opal and Diamond Heart Pendant in 14K White Gold pairs this gem with three classic diamonds, creating an expression of love that’s always fitting. A 0.48-carat pear-shaped opal is suspended from the top of a gleaming 14K white gold heart, held by a twist of white gold and diamonds. The highly-polished finish and sweeping lines of this piece will sweep her off her feet.

Heart pendants with unexpected gemstones are perfect for Valentine’s Day or any time that you want to celebrate your unique love. Give one to show that the one you love stands apart from the rest.