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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.
1.48-Carat Lime Green Australian Sapphire 
2.39-Carat Teal Blue Montana Sapphire (Heated) 
1.36-Carat Teal Blue Montana Sapphire (Heated) 
0.84-Carat Mint Green Demantoid Garnet 
0.97-Carat Teal Blue Montana Sapphire (Heated) 
0.76-Carat Sky Blue Montana Sapphire (Heated) 
0.99-Carat Tsavorite Garnet 
1.95-Carat Olive Green Australian Sapphire 
1.27-Carat Deep Blue Montana Sapphire (Heated) 
0.89-Carat Bright Green Colombian Emerald (Oiled) 
0.91-Carat Pale Aqua Blue Montana Sapphire (Heated) 
1.56-Carat Deep Royal Blue Ceylon Sapphire (Heated) 
2.19-Carat Teal-Green Particolored Montana Sapphire (Heated) 
0.89-Carat Medium Blue Montana Sapphire (Heated) 
0.80-Carat Medium Blue Montana Sapphire (Heated) 
0.89-Carat Colorless Montana Sapphire 
8.29-Carat Green California Tourmaline 
Ruby Halo Earrings, 5.0mm (Heated) 
1.52-Carat Pale Green Grossular Garnet 
1.11-Carat Nasarawa Teal Aqua 
0.91-Carat Bright Green Kornerupine 
1.45-Carat Nasarawa Teal Aqua 
1.94-Carat Olive Green to Olive Brown Color Change Australian Sapphire (Heated) 
0.85-Carat Green-Yellow Particolored Australian Sapphire 
1.16-Carat Orange-Blue Particolored Montana Sapphire (Heated) 
2.90-Carat Bright Lime Green California Tourmaline 
Montana Sapphire Earrings- Asscher, 4.25mm (Heated) 
1.06-Carat Rich Violet Blue Montana Sapphire (Heated) 
1.84-Carat Rich Blue Montana Sapphire (Heated) 
0.91-Carat Teal Blue Montana Sapphire (Heated) 
1.91-Carat Teal Blue Montana Sapphire (Heated) 
2.53-Carat Cornflower Blue Ceylon Sapphire