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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.
1.43-Carat Green Australian Sapphire (Heated) 
1.43-Carat Blue-Green Montana Sapphire 
1.29-Carat Aqua Blue Montana Sapphire (Heated) 
1.00-Carat Teal Blue Montana Sapphire (Heated) 
1.07-Carat Peacock Blue Montana Sapphire (Heated) 
2.28-Carat Yellow-Green Particolored Australian Sapphire 
1.78-Carat Royal Blue-Teal Bicolored Madagascar Sapphire 
0.72-Carat Golden Yellow Montana Sapphire (Heated) 
2.20-Carat Peacock Blue-Yellow Particolored Montana Sapphire (Heated) 
1.08-Carat Medium Blue Montana Sapphire (Heated) 
1.22-Carat Light Aqua Blue Montana Sapphire 
0.82-Carat Grayish Blue Montana Sapphire 
1.09-Carat Sky Blue Montana Sapphire (Heated) 
1.13-Carat Orange-Aqua Particolored Montana Sapphire (Heated) 
1.83-Carat Violet-Blue Ceylon Sapphire 
1.10-Carat Violet Purple Umba Sapphire 
1.07-Carat Lilac Purple Madagascar Sapphire 
1.73-Carat Hazy Bluish Violet Umba Sapphire 
1.74-Carat Deep Blue-Green Montana Sapphire (Heated) 
2.15-Carat Deep Royal Blue Ceylon Sapphire (Heated) 
1.78-Carat Robin's Egg Blue Montana Sapphire (Heated) 
0.63-Carat Pink-Violet Bicolored Montana Sapphire 
1.78-Carat Greenish-Yellow Mali Garnet 
1.39-Carat Medium Blue Montana Sapphire (Heated) 
1.12-Carat Dark Blue-Green Australian Sapphire 
1.92-Carat Deep Peacock Blue Montana Sapphire (Heated) 
1.70-Carat Ruby (Heated) 
2.09-Carat Light Violet-Blue Ceylon Sapphire 
0.82-Carat Peacock Blue Montana Sapphire (Heated) 
0.57-Carat Pale Lavender Montana Sapphire (Heated) 
2.53-Carat Golden Orange Umba Sapphire 
1.11-Carat Teal Blue Montana Sapphire (Heated) 
1.59-Carat Medium Blue Montana Sapphire (Heated) 
0.90-Carat Teal Blue Montana Sapphire (Heated) 
1.82-Carat Cornflower Blue Ceylon Sapphire 
0.82-Carat Pale Aqua Blue Montana Sapphire 
1.77-Carat Light Aqua Blue Montana Sapphire 
3.30-Carat Cornflower Blue Ceylon Sapphire 
1.10-Carat Medium Blue Montana Sapphire (Heated) 
1.31-Carat Teal Blue Montana Sapphire (Heated) 
1.41-Carat Rich Purple Umba Sapphire 
1.54-Carat Green-Yellow Particolored Montana Sapphire 
2.19-Carat Sky Blue Montana Sapphire