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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.
1.30-Carat Aqua Blue Montana Sapphire 
1.98-Carat Pale Blue Ceylon Sapphire (Heated) 
1.74-Carat Whiskey Orange Umba Sapphire 
1.81-Carat Magenta-Red Umba Sapphire 
8.34-Carat Rich Blue Tanzanite 
1.21-Carat Light Olive Green Australian Sapphire 
2.04-Carat Bluish Violet Umba Sapphire 
2.46-Carat Light Pink California Tourmaline 
0.87-Carat Yellow Montana Sapphire (Heated) 
1.24-Carat Teal Blue Montana Sapphire (Heated) 
0.96-Carat Sky Blue Montana Sapphire (Heated) 
0.73-Carat Pale Mint Green Montana Sapphire (Heated) 
1.09-Carat Medium Blue Montana Sapphire (Heated) 
0.83-Carat Pale Sky Blue Montana Sapphire 
1.46-Carat Rich Blue Montana Sapphire (Heated) 
1.26-Carat Grayish-Aqua Blue Montana Sapphire (Heated) 
Montana Sapphire Earrings- Orange, 5.0mm (Heated) 
2.61-Carat Cornflower Blue Madagascar Sapphire 
1.66-Carat Midnight Blue-Green Australian Sapphire 
2.30-Carat Hot Pink Sapphire 
1.22-Carat Steely Blue-Green to Purple Color Change Montana Sapphire (Heated) 
3.06-Carat Cornflower Blue Ceylon Sapphire (Heated) 
0.72-Carat Bright Green Kornerupine 
0.57-Carat Rich Purple Montana Sapphire 
1.32-Carat Robin's Egg Blue Montana Sapphire (Heated) 
1.19-Carat Peacock Blue Montana Sapphire (Heated) 
1.15-Carat Teal Blue Montana Sapphire (Heated) 
0.79-Carat Purple Montana Sapphire 
1.25-Carat Medium Blue Montana Sapphire (Heated) 
1.27-Carat Rich Sky Blue Montana Sapphire (Heated) 
1.44-Carat Rich Blue Montana Sapphire (Heated) 
1.30-Carat Yellow-Gold Particolored Montana Sapphire (Heated) 
1.23-Carat Peacock Blue Montana Sapphire (Heated) 
2.19-Carat Sky Blue Montana Sapphire 
1.58-Carat Peacock Blue Montana Sapphire (Heated) 
1.27-Carat Medium Blue Montana Sapphire (Heated) 
1.78-Carat Greenish-Yellow Mali Garnet 
1.49-Carat Rich Sky Blue Ceylon Sapphire 
1.75-Carat Deep Blue-Green Australian Sapphire 
1.76-Carat Yellow-Green Particolored Australian Sapphire (Heated) 
0.90-Carat Medium Blue Montana Sapphire (Heated) 
1.85-Carat Cornflower Blue Ceylon Sapphire 
0.30-Carat Rich Green Colombian Emerald (Treated) 
1.43-Carat Deep Blue Montana Sapphire (Heated) 
1.45-Carat Medium Blue Montana Sapphire (Heated) 
1.70-Carat Light Yellow Madagascar Sapphire