Madelynn Cassin Designs
Round Blue Spinel | 5.3MM and 6.7MM
Round Blue Spinel | 5.3MM and 6.7MM
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Beautiful Round Blue Spinel | Hand cut in the U.S. | 5.3mm and 6.7mm
14k Yellow/Rose Gold Rings with one of these stones start at $1200.
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Custom Ring Gallery


How it works
Design your own ring
To design your own ring using an ethically sourced gemstone from my collection please select your desired gemstone and write me an email to get a precise quote for the ring you are looking for.
I have a variety of prong and bezel settings available that can be customized to fit your stone.
Turnaround on all custom rings is about 8 weeks.

What makes my jewelry special
Madelynn Cassin Designs has been selling on ETSY since 2008 under the shop name Onegarnetgirl. This small, independently owned business grew from a love of gemstones and a passion for making. Madelynn's designs are inspired by large, naturally occurring colored gemstones and the way they sparkle in the sun. These mini works of art start from a block of wax that she then carefully carves into the bold yet delicate and feminine creations that bare her name. This labor of love has grown from a small workspace on a three-season porch to a bustling workshop in an old mill building, where Madelynn continues to handmake objects that help people feel beautiful, loved and express their personalities.
Sustainability is super important, as the effects of mining for precious materials can devastate communities unnecessarily. Because of this, we use only alloys that are 100% recycled, ethically sourced gemstones, and utilize compostable, plant based packaging.
Why is a Madelynn Cassin Piece so Special?
Each setting is hand carved in wax, cast in metal, and hand polished, prepped, soldered and set in our workshop in Keene, NH. From concept to completion all settings are handcrafted and never utilize purchased mass-produced components. If you treasure jewelry that is made by hand, in a careful, thoughtful manner, you have come to the right place.