About Yogo + Montana Sapphires

Yogo Sapphire

Learn About Yogo & Montana Sapphires


Discover the extraordinary beauty, rarity, and Montana heritage behind one of the world’s most treasured sapphires.

What Is a Yogo Sapphire?

The Yogo Sapphire is one of the rarest and most valuable sapphires in the world. Found exclusively in Montana’s Yogo Gulch within the Little Belt Mountains, these extraordinary gemstones are treasured for their naturally vivid blue color and remarkable clarity.

Unlike most sapphires on the market, Yogo sapphires are never heat treated. Their stunning beauty comes directly from nature, making them exceptionally sought after by collectors and jewelry lovers alike.

Yogo Sapphire Ring

Why Yogo Sapphires Are So Special


Naturally Untreated

Yogo sapphires are naturally brilliant and do not require heat treatment to enhance their color or clarity.

Extremely Rare

Yogos are found in only one place on Earth — Montana’s Yogo Gulch — making them exceptionally limited in supply.

Montana Heritage

These gemstones are deeply tied to Montana history and are beloved symbols of the Treasure State.

Signature Cornflower Blue

Most Yogo sapphires display their iconic vivid cornflower blue hue, admired around the world.

Montana Fancy Sapphires

Montana is also famous for its stunning Fancy sapphires, found primarily throughout Western Montana. These sapphires come in a breathtaking range of colors including teal, green, yellow, orange, pink, violet, and even color-changing varieties.

At Sugar Plum Fine Jewelry, we proudly offer both finished Montana sapphire jewelry and loose stones for custom creations.

Create Something Truly One-of-a-Kind

Whether you are searching for a timeless Yogo sapphire engagement ring or dreaming up a custom Montana sapphire piece, our team would love to help bring your vision to life.