Isle Royale Treasures

Isle Royale Treasures FREE shipping within the United States! Isle Royale Greenstone

One of the rarest gemstones in the world and one of the most valuable American gemstones.

Our mission is to create Michigan's finest quality Isle Royale Greenstone Jewelry.

*All of our genuine Isle Royale greenstones were purchased in the rough from a certified pre-1915 estate collection. Just like diamonds, Greenstones formed in ancient lava flows one billion years ago. Greenstones are more rare than diamonds but not nearly as costly in comparison. Chlorastrolite has been discovered

in only one geological area in the world. Isle Royale Greenstones are the most prized for their beauty by museums and collectors. Isle Royale later became a national park in 1940, so from that date forward it is illegal to collect greenstones from the island & its beaches. The gems featured in this limited collection were sourced from an estate of a long-ago treasure hunter, who had collected them on the beaches of Isle Royale prior to 1915. Petoskey stone which is a fossil is known as the Michigan state stone, but in 1974, Greenstone became the official state Gemstone.

*This article was written & copyrighted by Isle Royale Treasures

08/18/2026
Come visit Isle Royale Treasures in Downtown Owosso on September 18 from 4–8 PM! We’ll be bringing our handcrafted jewel...
08/17/2026

Come visit Isle Royale Treasures in Downtown Owosso on September 18 from 4–8 PM! We’ll be bringing our handcrafted jewelry featuring authentic Isle Royale Greenstone, Michigan’s state gemstone. 💚

Every Greenstone is personally cut and polished by hand before being transformed into a one-of-a-kind piece.

Come see our collection in person, discover the natural beauty of Michigan’s own gemstone, and meet the artist behind the pieces!

We can’t wait to see you at ArtWalk Owosso 2026! ✨

📍 Downtown Owosso, Michigan
📅 September 18, 2026
⏰ 4–8 PM

08/17/2026

Come visit Isle Royale Treasures at Elms Road Park in Swartz Creek, Michigan, on August 21–22! We’ll be bringing our handcrafted jewelry featuring genuine Isle Royale Greenstone, Michigan’s beautiful state gemstone. 💚

Come explore amazing handmade creations from talented independent artists, enjoy live music and delicious local food trucks, and find something special to take home!

📍 Elms Road Park | Swartz Creek, MI
📅 Friday, August 21: 3 PM–7 PM
📅 Saturday, August 22: 9 AM–5 PM
🎟️ Admission is FREE!

We’d love to see you there! Stop by our booth, say hello, and discover a little piece of Michigan to take home. ✨

08/12/2026

Our latest earring designs are officially live on our Etsy shop. Handcrafted, unique, and inspired by the wild beauty of Isle Royale. Shop Isle Royale Treasures via the link in our bio! ✨

07/28/2026

Next stop: Escanaba! 📍

Isle Royale Treasures is heading to the Waterfront Art Festival at Ludington Park.
Join us for a perfect summer day of live music, food trucks, and unique local shopping right along Little Bay de Noc!

📍 Ludington Park — Escanaba, MI
📅 Saturday, August 1, 2026
⏰ 10:00 AM – 4:00 PM

Stop by and say hello! We can’t wait to see you there! 😊

07/16/2026

✨ Celebrating 40 years of Art in the Park! ✨

Come share this special weekend with us in beautiful Petoskey this Saturday, July 18! Stop by our booth to explore our exclusive collection of handcrafted Isle Royale greenstone jewelry. We can’t wait to see you there!

📍 Pennsylvania Park, Downtown Petoskey
📅 July 18, 2026

Address

Imlay City, MI

Website

Alerts

Be the first to know and let us send you an email when Isle Royale Treasures posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category