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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.
1.59-Carat Bright Green Kornerupine 
0.87-Carat Light Aqua Blue Montana Sapphire (Heated) 
0.93-Carat Rich Blue Montana Sapphire (Heated) 
0.90-Carat Aqua Blue Montana Sapphire (Heated) 
2.59-Carat Mint Green Grossular Garnet 
0.79-Carat Aqua Blue Montana Sapphire (Heated) 
1.76-Carat Deep Blue-Green Montana Sapphire (Heated) 
0.86-Carat Dark Blue-Green Particolored Australian Sapphire (Heated) 
1.45-Carat Violet-Blue Montana Sapphire (Heated) 
1.68-Carat Teal Blue Ceylon Sapphire (Heated) 
1.03-Carat Intense Pink Umba Sapphire 
0.99-Carat Rich Aqua Montana Sapphire (Heated) 
1.60-Carat Peacock Blue Montana Sapphire (Heated) 
1.57-Carat Medium Green Demantoid Garnet 
1.75-Carat Deep Blue-Green Australian Sapphire 
0.86-Carat Teal Blue Montana Sapphire (Heated) 
0.89-Carat Near Colorless Montana Sapphire 
1.47-Carat Rich Blue Montana Sapphire (Heated) 
1.07-Carat Medium-Light Blue Particolored Montana Sapphire (Heated) 
1.28-Carat Violet Purple Umba Sapphire 
2.79-Carat Golden Olive Australian Sapphire 
1.21-Carat Light Olive Green Australian Sapphire 
0.86-Carat Peacock Blue Montana Sapphire (Heated) 
0.70-Carat Teal Blue Montana Sapphire (Heated) 
0.81-Carat Rich Aqua Montana Sapphire (Heated) 
2.35-Carat Spessartine Garnet 
0.82-Carat Yellow-Green Particolored Australian Sapphire (Heated) 
1.60-Carat Lime Green California Tourmaline 
1.96-Carat Rich Blue Ceylon Sapphire (Heated) 
1.62-Carat Greenish Yellow Sapphire 
6.51-Carat Deep Blue Tanzanite 
1.27-Carat Peacock Blue Montana Sapphire (Heated) 
2.03-Carat Blue-Green Montana Sapphire (Heated) 
2.46-Carat Rich Blue Ceylon Sapphire (Heated) 
0.86-Carat Magenta Montana Sapphire 
Montana Sapphire Earrings- Asscher, 4.5mm (Heated) 
0.92-Carat Rich Blue Montana Sapphire (Heated) 
0.95-Carat Deep Royal Blue Ceylon Sapphire (Heated) 
1.05-Carat Teal Blue Montana Sapphire (Heated) 
0.91-Carat Light Blue Montana Sapphire (Heated) 
Montana Sapphire Earrings- Square, 4.5mm (Heated) 
1.14-Carat Medium Blue Montana Sapphire (Heated)