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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.
1.51-Carat Medium Blue Montana Sapphire (Heated) 
1.47-Carat Rich Blue Montana Sapphire (Heated) 
1.06-Carat Teal Blue Montana Sapphire (Heated) 
1.75-Carat Near Colorless Montana Sapphire (Heated) 
0.97-Carat Robin's Egg Blue Montana Sapphire (Heated) 
1.18-Carat Light Violet-Blue Montana Sapphire 
1.13-Carat Light Aqua Blue Montana Sapphire 
1.13-Carat Medium Blue Montana Sapphire (Heated) 
1.76-Carat Yellow Montana Sapphire 
1.97-Carat Rich Blue Montana Sapphire (Heated) 
1.32-Carat Aqua Blue Montana Sapphire (Heated) 
1.49-Carat Medium Blue Montana Sapphire (Heated) 
2.03-Carat Blue-Green Montana Sapphire (Heated) 
1.44-Carat Rich Cornflower Blue Ceylon Sapphire (Heated) 
0.84-Carat Yellow Montana Sapphire (Heated) 
1.47-Carat Medium Blue Montana Sapphire (Heated) 
1.51-Carat Medium Blue Umba Sapphire 
1.37-Carat Light Teal Blue Montana Sapphire (Heated) 
1.53-Carat Magenta Purple to Intense Pink Color Change Garnet 
0.98-Carat Pale Yellow-Aqua Particolored Montana Sapphire (Heated) 
1.38-Carat Light Aqua Blue Montana Sapphire (Heated) 
2.90-Carat Bright Lime Green California Tourmaline 
1.05-Carat Royal Blue Ceylon Sapphire (Heated) 
1.18-Carat Orange-Magenta Particolored Umba Sapphire 
1.37-Carat Near Black Australian Sapphire 
1.15-Carat Blue-Lavender Particolored Montana Sapphire (Heated) 
0.78-Carat Rich Blue-Teal Bicolored Montana Sapphire (Heated) 
1.32-Carat Rich Blue Montana Sapphire (Heated) 
1.08-Carat Robin's Egg Blue Montana Sapphire (Heated) 
0.87-Carat Bright Yellow Montana Sapphire 
1.12-Carat Rich Blue Montana Sapphire (Heated) 
1.35-Carat Yellow-Green Montana Sapphire (Heated) 
1.24-Carat Purple Madagascar Sapphire (Heated) 
0.70-Carat Aqua Blue Montana Sapphire (Heated) 
1.60-Carat Peacock Blue Montana Sapphire (Heated) 
1.05-Carat Teal Montana Sapphire (Heated) 
0.77-Carat Light Violet Umba Sapphire 
0.89-Carat Medium Blue Montana Sapphire (Heated) 
0.88-Carat Light Blue Montana Sapphire (Heated) 
0.96-Carat Medium Blue Montana Sapphire (Heated) 
0.81-Carat Medium Blue Montana Sapphire (Heated) 
2.54-Carat Royal Blue Ceylon Sapphire (Heated) 
1.24-Carat Yellow-Green Particolored Australian Sapphire 
2.36-Carat Light Yellow-Green to Blue-Green Montana Sapphire 
1.21-Carat Pale Aqua Montana Sapphire (Heated) 
1.41-Carat Violet Purple Ceylon Sapphire 
1.85-Carat Intense Pink Spinel 
1.59-Carat Medium Blue Montana Sapphire (Heated) 
3.63-Carat Rich Teal Montana Sapphire (Heated) 
3.52-Carat Cornflower Blue Ceylon Sapphire 
4.23-Carat Pale Aqua Montana Sapphire 
1.07-Carat Blue-Green Montana Sapphire (Heated) 
1.19-Carat Pale Aqua Blue Montana Sapphire (Heated) 
1.58-Carat Violet Purple Ceylon Sapphire 
1.07-Carat Medium Blue Montana Sapphire (Heated) 
1.28-Carat Rich Blue Ceylon Sapphire (Heated) 
1.06-Carat Rich Violet Blue Montana Sapphire (Heated) 
0.82-Carat Pale Blue-Yellow Particolored Montana Sapphire (Heated) 
1.29-Carat Light Yellow Sapphire 
1.15-Carat Yellow-Green Particolored Australian Sapphire 
1.43-Carat Peacock Blue Montana Sapphire (Heated) 
1.15-Carat Sky Blue Montana Sapphire (Heated) 
1.33-Carat Medium Blue Montana Sapphire (Heated) 
2.45-Carat Purple Ceylon Sapphire 
1.10-Carat Deep Blue-Green Montana Sapphire (Heated) 
1.41-Carat Deep Blue-Green Montana Sapphire (Heated) 
0.78-Carat Aqua Blue Montana Sapphire (Heated) 
1.06-Carat Light Lavender Purple Montana Sapphire 
1.63-Carat Teal Blue Montana Sapphire (Heated)