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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.
1.29-Carat Pastel Pyrope Color-Change Garnet 
1.15-Carat Yellow-Colorless Particolored Montana Sapphire (Heated) 
1.46-Carat Medium Blue Montana Sapphire (Heated) 
1.78-Carat Royal Blue-Teal Bicolored Madagascar Sapphire 
1.15-Carat Sky Blue Montana Sapphire (Heated) 
1.44-Carat Royal Blue Montana Sapphire (Heated) 
5.48-Carat Violet Unheated Tanzanite (Zoisite) 
0.77-Carat Yellow-Orange Umba Sapphire 
1.10-Carat Deep Blue Montana Sapphire (Heated) 
1.27-Carat Rich Blue Montana Sapphire (Heated) 
0.81-Carat Violet-Blue Montana Sapphire (Heated) 
0.47-Carat Pale Kiwi Green Grossular Garnet 
1.41-Carat Light Aqua Montana Sapphire 
1.04-Carat Aqua Blue Montana Sapphire (Heated) 
1.78-Carat Aqua Blue Montana Sapphire 
1.03-Carat Teal Blue Montana Sapphire (Heated) 
0.98-Carat Light Aqua Blue Montana Sapphire 
0.53-Carat Teal Blue Montana Sapphire 
0.88-Carat Rich Blue Montana Sapphire (Heated) 
0.57-Carat Pale Lavender Montana Sapphire (Heated) 
0.78-Carat Golden Yellow Montana Sapphire (Heated) 
1.48-Carat Pale Yellow-Orange Particolored Montana Sapphire (Heated) 
3.82-Carat Yellow-Green Montana Sapphire (Heated) 
1.33-Carat Teal Blue Montana Sapphire (Heated) 
0.89-Carat Near Colorless Montana Sapphire 
1.27-Carat Midnight Blue Australian Sapphire 
14.15-Carat Nigerian Morganite 
1.01-Carat Teal Montana Sapphire (Heated) 
1.24-Carat Orange-Yellow Particolored Montana Sapphire (Heated) 
1.30-Carat Teal Blue Montana Sapphire (Heated) 
1.06-Carat Lemon Yellow Australian Sapphire 
0.97-Carat Pink-Lavender Particolored Umba Sapphire 
1.11-Carat Teal Blue Montana Sapphire (Heated) 
1.27-Carat Deep Blue Montana Sapphire (Heated) 
1.78-Carat Medium Blue Montana Sapphire (Heated) 
Seven-Stone Ring with 0.52-Carat Montana Sapphire (Heated) 
0.81-Carat Light Aqua Blue Montana Sapphire 
1.10-Carat Bright Green Colombian Emerald (Oiled) 
1.15-Carat Light Yellow Ceylon Sapphire (Heated) 
1.93-Carat Colorless Sapphire 
2.02-Carat Teal Blue Montana Sapphire (Heated) 
1.04-Carat Medium Blue Montana Sapphire (Heated) 
1.44-Carat Rich Blue Montana Sapphire (Heated) 
1.44-Carat Medium Blue Montana Sapphire (Heated) 
0.85-Carat Medium Blue Montana Sapphire (Heated) 
1.78-Carat Aqua Blue Montana Sapphire (Heated) 
0.99-Carat Bluish Violet Umba Sapphire 
1.65-Carat Deep Peacock Blue Montana Sapphire (Heated) 
2.06-Carat Deep Blue Montana Sapphire (Heated) 
1.37-Carat Light Teal Blue Montana Sapphire (Heated) 
0.57-Carat Pink Montana Sapphire 
2.37-Carat Light Aqua Blue Montana Sapphire 
1.22-Carat Teal Blue Montana Sapphire (Heated) 
1.97-Carat Rich Blue Montana Sapphire (Heated) 
1.43-Carat Peacock Blue Montana Sapphire (Heated) 
0.99-Carat Teal Blue Montana Sapphire (Heated) 
1.71-Carat Violet Purple Ceylon Sapphire 
1.06-Carat Light Lavender Purple Montana Sapphire