What Is A Montana Sapphire Engagement Ring?

Montana sapphires are simply sapphires from Montana, the only US state where they are commercially mined. Sapphires were found in Montana in 1865 by early gold prospectors and are one of the reasons for that state’s nickname, “The Treasure State.” These were the first gem-quality sapphires found in the United States. Though they’re found in a wide variety of colors, the most well-known Montana sapphires are teal, blue/green, and blue-gray. Most Montana sapphires have a distinct pale color that distinguishes them from the well-known vibrant and darker blue sapphires that most people are familiar with. Montana sapphires are also known as mermaid sapphires and peacock sapphires. Montana sapphires are also ethical and conflict-free.

Is A Montana Sapphire Engagement Ring Right For You?

Whether blue green, teal, violet, periwinkle, or all of the above, Montana sapphires are called mermaid sapphires for a reason: they’re otherworldly color is hard to put words to. Montana sapphires typically display a range of color saturations within the same stone: dark grey teal spots with cloudy translucent portions. Because of their unique color, Montana sapphires lend well to non-traditional engagement rings, creating a cool palette when set in white metal and high contrast when set in yellow gold. Watch the video to learn more about designing your own Montana sapphire engagement ring.

Browse Montana Sapphire Engagement Rings

See some of the rings we’ve designed using Montana Sapphires to get inspired.

Montana Sapphire Pros and Cons


  • Conflict-free and ethical, you can know the origin of your diamond with 100% certainty
  • You’re guaranteed to have a unique engagement ring: Montana sapphire are not commonly used and when they are, each stone varies widely in color
  • Available in a wide range of colors including blues, greens, yellows, purples and combinations
  • Gemstone durability is rated from 1-10 on the Mohs Scale of hardness, sapphires are a 9


  • Not as durable or hard as diamond or moissanite
  • Sapphires do not sparkle or have the brilliance of diamonds; a white sapphire will not look like a diamond

Who Is A Montana Sapphire Engagement
Ring Right For?

If you want a unique engagement ring that’s guaranteed to be ethical and conflict free, Montana sapphires are a great choice. A Montana sapphire engagement ring is not for you if you want the classic look of a diamond ring with lots of sparkle and brilliance. Montana sapphires may not be the best choice for you if you want a traditional engagement ring as they tend to create an alternative look.

Additional Resources

Lab Created Sapphires and Other Gemstones

Many gemstones including sapphires have lab created counterparts that are eco-friendly and more budget-friendly.

Sapphire Engagement Ring Meaning, Durability and Types

Take a deep dive into the history, symbolism, and properties of sapphires.

Montana Sapphires, Mermaid Sapphires and Peacock Sapphires

Learn about this magical, ethical gemstone that often has color-changing properties.

Ready to Start Designing?

We will work with you to help you take the first step toward designing a ring.