MineralogyDesign's Shop Announcement

Mineralogy, is a collection of limited edition mineral jewelry and natural diamond engagement rings handmade by Theresa Cowan in her Chicago studio/storefront. Each item is made by hand and processed in the order in which it is received. Items will ship within 10-15 business days of purchase. Thank you for your patience and understanding. Please read shop policies before purchase. We've just opened up our brick and mortar studio in Chicago at 1944 W. Montrose Avenue where you can view our collection in person! Jewelry care mentioned below.



Do you make everything yourself?

Yes. Every piece of jewelry is handmade by Theresa from the conceptualizing, to the stone ordering, to the fabrication, and finally to the packaging and shipping.

Can I return a purchase?

Please visit store policies page for further information.


Can rings be resized?

Unfortunately, rings cannot be resized. Once the stone has been set, it cannot be removed and in order to change the size of the ring, high heat must be applied and would cause the stone to crack.

Do you have sales?

Yes, we do run sales several times a year, just stay tuned to our shop announcement to see when a sale goes up...we also post information on our Facebook and Instagram accounts. We unfortunately can't accommodate custom orders in our sales. Thank you for understanding.

Do you gift wrap?

Yes, for no additional charge. Gift wrap is kraft brown paper and cream grosgrain ribbon. Please request in note to seller at checkout.

Where do I submit special requests?

In the note to seller box at checkout.



Many of my pieces are made from raw brass or copper. When left raw these metals have the tendency to naturally patina and age over time. I love this about brass, and feel it gives each piece character, but if you prefer to keep your piece in it's original bright gold form, store in an airtight container or use a gentle brass/ bronze cleanser or polish when needed to bring it back to it's bright state.

Sterling + Fine Silver

When worn regularly, silver usually keeps it bright state. If kept out for periods of time, even unworn it can tarnish and the way it tarnishes depends on the climate you live in. You can easily rid your silver jewelry of tarnish with a simple polish, but we recommend wearing your jewelry often to naturally prevent this.

14k Gold Fill

My pieces, such as ear hooks on a few earrings styles are made of gold fill. Gold fill is made from solid gold which is 'filled' with other alloys. Unlike gold plate, It will not flake, and the surface will not turn your fingers like brass can do. The finish and surface of gold fill has the same properties of solid gold because it is gold. Please care for your gold fill pieces just as you would a gold piece of jewelry. Gently polish by hand with a clean cloth.

Solid 14k Gold

My solid 14k gold is created from recycled precious metal. Gently polish by hand with a clean cloth. Ultrasonic cleaners are safe for use and even a soft toothbrush and a squirt of Dawn dish soap and warm water can go a long way in helping your jewelry shine again.

>>It's a good idea to remove your jewelry and place it somewhere safe before working out, swimming, showering, or getting your hands dirty in general.

Thank you,


This shop accepts Etsy Gift Cards.