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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 Purple Ceylon Sapphire 
2.33-Carat Peacock Blue Montana Sapphire (Heated) 
1.76-Carat Purple Ceylon Sapphire 
1.16-Carat Light Aqua Montana Sapphire (Heated) 
1.16-Carat Greenish Yellow California Tourmaline 
1.02-Carat Aqua Blue Montana Sapphire (Heated) 
1.98-Carat Pink Tourmaline 
1.50-Carat Deep Peacock Blue Australian Sapphire 
0.82-Carat Gray-Aqua Montana Sapphire (Heated) 
1.22-Carat Pink Tourmaline 
1.16-Carat Violet-Blue Montana Sapphire (Heated) 
0.82-Carat Near Colorless Montana Sapphire 
1.04-Carat Pink Umba Sapphire 
1.27-Carat Medium Blue Montana Sapphire (Heated) 
1.11-Carat Pale Yellow Montana Sapphire (Heated) 
1.06-Carat Steely Blue to Purple Color Change Montana Sapphire (Heated) 
0.89-Carat Medium Blue Montana Sapphire (Heated) 
0.85-Carat Rich Teal Blue Montana Sapphire (Heated) 
1.09-Carat Sky Blue Ceylon Sapphire 
1.00-Carat Raspberry Pink Umba Sapphire 
1.85-Carat Cornflower Blue Ceylon Sapphire 
1.55-Carat Rich Blue Umba Sapphire 
1.82-Carat Aqua-Blue Particolored Montana Sapphire (Heated) 
1.78-Carat Aqua Blue Montana Sapphire 
1.59-Carat Deep Blue-Green Montana Sapphire (Heated) 
0.88-Carat Pale Aqua Blue Montana Sapphire 
0.99-Carat Peacock Blue Montana Sapphire (Heated) 
1.05-Carat Peacock Blue Montana Sapphire (Heated) 
1.34-Carat Golden Yellow Montana Sapphire (Heated) 
0.86-Carat Magenta Montana Sapphire 
1.60-Carat Orange-Yellow Particolored Montana (Heated) 
2.44-Carat Cornflower Blue Madagascar Sapphire 
0.75-Carat Medium Blue Montana Sapphire (Heated) 
1.31-Carat Teal Blue Montana Sapphire (Heated) 
1.49-Carat Pink Umba Sapphire 
0.89-Carat Light Yellow Montana Sapphire (Heated) 
0.82-Carat Pale Aqua Blue Montana Sapphire 
1.29-Carat Medium Blue Montana Sapphire (Heated) 
0.97-Carat Pink-Lavender Particolored Umba Sapphire 
1.52-Carat Robin's Egg Blue Montana Sapphire (Heated) 
1.38-Carat Medium Blue Montana Sapphire (Heated) 
1.42-Carat Midnight Blue Australian Sapphire (Heated) 
0.67-Carat Pale Blue Montana Sapphire 
2.07-Carat Yellow-Green Australian Sapphire 
0.71-Carat Bright Orange Montana Sapphire (Heated) 
0.88-Carat Teal Blue Montana Sapphire (Heated) 
1.20-Carat Colorless Montana Sapphire 
1.02-Carat Deep Peacock Blue Australian Sapphire 
0.81-Carat Medium Blue Montana Sapphire (Heated) 
0.71-Carat Royal Blue Sapphire 
0.62-Carat Light Yellow Montana Sapphire 
1.59-Carat Aqua Blue Sapphire (Heated) 
1.08-Carat Orange Montana Sapphire (Heated) 
0.93-Carat Aqua Blue Songea Sapphire 
0.68-Carat Purple-Pink Particolored Umba Sapphire 
1.78-Carat Robin's Egg Blue Montana Sapphire (Heated) 
0.71-Carat Pale Lavender Montana Sapphire (Heated) 
1.16-Carat Rich Sky Blue Montana Sapphire (Heated) 
2.21-Carat Light Pink-Mint Bicolored California Tourmaline 
2.20-Carat Warm Brown Umba Sapphire 
1.95-Carat Bright Green Tsavorite Garnet 
1.25-Carat Teal Blue Montana Sapphire (Heated) 
1.54-Carat Teal Blue Montana Sapphire (Heated) 
1.02-Carat Light Sky Blue Montana Sapphire 
1.16-Carat Sky Blue Sapphire 
0.90-Carat Peacock Blue Montana Sapphire (Heated) 
0.82-Carat Yellow-Orange Montana Sapphire 
1.92-Carat Deep Green-Yellow Particolored Montana Sapphire (Heated) 
1.46-Carat Golden Yellow Montana Sapphire (Heated) 
1.60-Carat Lime Green California Tourmaline 
1.95-Carat Medium Blue Montana Sapphire (Heated) 
1.13-Carat Near Black Australian Sapphire 
2.06-Carat Royal Blue Montana Sapphire (Heated) 
1.81-Carat Sky Blue Ceylon Sapphire 
The "Beatrice" Ring with Upcycled Rose-Cut Diamond 
1.03-Carat Medium Blue Montana Sapphire (Heated) 
0.87-Carat Teal Blue Montana Sapphire (Heated) 
1.27-Carat Medium Blue Montana Sapphire (Heated) 
1.86-Carat Rich Violet-Blue Ceylon Sapphire 
1.13-Carat Near Colorless Montana Sapphire 
1.09-Carat Light Yellow Montana Sapphire 
0.88-Carat Teal-Aqua Particolored Montana Sapphire (Heated) 
0.92-Carat Pale Yellow-Green Montana Sapphire (Heated) 
1.03-Carat Sky Blue Montana Sapphire (Heated) 
1.12-Carat Blue-Green Montana Sapphire (Heated) 
1.18-Carat Peacock Blue Montana Sapphire (Heated) 
1.57-Carat Aqua Blue Montana Sapphire (Heated) 
1.22-Carat Pale Pink Montana Sapphire