Rock Creek, Montana
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Natural Gemstone Jewelry & Loose Gemstones at Earth’s Treasury
Welcome to Earth’s Treasury! If you’re looking for beautiful precision-cut loose gemstones or custom-designed natural gemstone jewelry, you’ve come to the right place. Earth’s Treasury features one of the widest selections of ethically sourced colored gemstones available online. We work closely with professional artisans who craft beautiful jewelry using gemstones that come directly from the mine to the market. Sapphires, rubies, emeralds, tourmalines, tanzanite, aquamarine—we have it all!
At Earth’s Treasury, we love the process of working with clients to help make their custom natural gemstone jewelry vision come to life. Whether you prefer a classically styled piece or a truly unique custom design, we can make it happen. We will work with you through the design, prototyping, casting, and production processes to craft your dream piece of jewelry.
While our collections contain colored gemstones from all over the world, our true passion is for North American gemstones. We work with American miners to source stones such as the brilliant Montana sapphire, gorgeous Oregon sunstone and colorful tourmaline from California and Maine. There is a remarkable diversity of colored gemstones available right here in America, many of which are rarer and more valuable than diamonds!
If you have any questions about our collection, don’t hesitate to reach out to us. We’re here to help you through the process of finding the perfect natural gemstone jewelry or loose gemstones online.
0.79-Carat Yellow-Orange Particolored Montana Sapphire (Heated) 
2.11-Carat Greenish Yellow California Tourmaline 
2.16-Carat Hot Pink Spinel 
1.76-Carat Medium Blue Montana Sapphire (Heated) 
0.83-Carat Midnight Blue Australian Sapphire (Heated) 
1.46-Carat Greenish Yellow California Tourmaline 
1.69-Carat Magenta Umba Sapphire 
1.01-Carat Purple Umba Sapphire 
1.13-Carat Sky Blue Sapphire 
1.50-Carat Periwinkle Blue Umba Sapphire 
1.23-Carat Deep Blue-Green Montana Sapphire (Heated) 
1.87-Carat Lilac Pink Mahenge Garnet 
1.83-Carat Rich Teal Australian Sapphire 
2.71-Carat Greenish Yellow California Tourmaline 
1.00-Carat Medium Blue Montana Sapphire (Heated) 
2.20-Carat Bright Pink California Tourmaline 
0.96-Carat Deep Blue-Green Montana Sapphire (Heated) 
0.49-Carat Deep Green Colombian Emerald (Oiled) 
0.89-Carat Yellow-Gold Particolored Montana Sapphire (Heated) 
1.11-Carat Nasarawa Teal Aqua 
1.07-Carat Blue-Aqua Bicolored Montana Sapphire (Heated) 
0.92-Carat Aqua Blue Umba Sapphire 
0.54-Carat Pale Lavender Umba Sapphire 
0.91-Carat Rich Pink Montana Sapphire 
2.18-Carat Lavender-Peach Bicolored Montana Sapphire 
1.74-Carat Rich Peacock Blue Madagascar Sapphire 
Custom Jewelry Affirm 
1.63-Carat Medium Blue Ceylon Sapphire (Heated) 
1.08-Carat Greenish-Yellow Mali Garnet 
2.00-Carat Bluish Violet Umba Sapphire 
1.45-Carat Deep Blue-Green Nigerian Sapphire 
6.69-Carat Pink-Green Bicolored California Tourmaline 
1.94-Carat Bluish Violet Umba Sapphire