Mineralogy is a collection of limited edition and one-of-a-kind jewelry designed and handcrafted by Chicago metalsmith, Theresa Cowan. Inspired by an earth science class lecture on minerals, the collection began. Mineralogy creates unusual statement and heirloom quality pieces that pay tribute to the beauty of natural gems and minerals.

Traditional metalsmithing techniques are used with an assortment of metals ranging from brass, silver, 14k gold fill, and solid 14k gold. The styles are produced in limited quantities, with each individual piece unique in its own aspects due to nature’s remarkable aberrations.


It is my commitment to create quality jewelry in limited editions with the intention of offering unique pieces for my customers. I believe in the integrity of handmade objects and carefully sourced materials. I am proud to hand select my gems and minerals from a small array of reputable gemologists, collectors, mine owners, and lapidary specialists. All of my jewelry is designed and hand fabricated in my Chicago studio. From the sawing, filing, sanding, soldering, and polishing, everything is done with my own two hands. All designs made with precious metals are 100% recycled material and I use ethically sourced and conflict free diamonds and gemstones. I believe in the importance of longevity and versatility, therefore, my jewelry is intended to be worn from season to season, one occasion after another. I release two seasonal collections every year, but I am always producing new pieces in between. I hope you find a few favorites for you or someone you love and know that you will own something truly unique and that no one will have something quite like it.
— Theresa Cowan (designer + maker)