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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.
1.77-Carat Pink Tourmaline 
1.17-Carat Aqua Blue Sapphire (Heated) 
1.17-Carat Sky Blue Ceylon Sapphire 
1.13-Carat Purplish Pink Madagascar Sapphire 
0.71-Carat Pale Lavender Montana Sapphire (Heated) 
4.22-Carat Deep Magenta Spinel 
1.98-Carat Light Purple Umba Sapphire 
0.83-Carat Aqua Blue Montana Sapphire 
1.02-Carat Gray-Aqua Montana Sapphire 
1.25-Carat Medium Blue Montana Sapphire (Heated) 
1.05-Carat Blue-Yellow Parti-Colored Montana Sapphire (Heated) 
0.91-Carat Unheated Tanzanite (Zoisite) 
1.24-Carat Purple Madagascar Sapphire (Heated) 
1.32-Carat Mint Green Montana Sapphire 
1.66-Carat Royal Blue Ceylon Sapphire (Heated) 
1.29-Carat Deep Peacock Blue African Sapphire (Heated) 
1.10-Carat Rich Blue Ceylon Sapphire (Heated) 
0.78-Carat Yellow-Green Montana Sapphire (Heated) 
0.91-Carat Pale Aqua Blue Montana Sapphire (Heated) 
2.16-Carat Unheated Tanzanite (Zoisite) 
1.03-Carat Mint Green Montana Sapphire 
1.42-Carat Dark Blue-Orange Particolored Montana Sapphire (Heated) 
3.92-Carat Cobalt Blue Tanzanite 
1.16-Carat Aqua Blue Montana Sapphire (Heated) 
0.71-Carat Bright Orange Montana Sapphire (Heated) 
0.82-Carat Pale Lavender-Pink Montana Sapphire 
1.55-Carat Rich Green Australian Sapphire 
1.61-Carat Yellow-Green Particolored Australian Sapphire 
1.21-Carat Purple Umba Sapphire 
1.72-Carat Violet-Blue Montana Sapphire 
2.16-Carat Lime Green Australian Sapphire (Heated) 
0.57-Carat Rich Purple Montana Sapphire 
1.35-Carat Pale Pink-Lavender Bicolored Umba Sapphire