Jeffrey R. Hapeman
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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.
1.31-Carat Nasarawa Teal Aqua 
2.02-Carat Rich Purple Sapphire 
1.36-Carat Teal Blue Montana Sapphire (Heated) 
0.58-Carat Near Colorless Montana Sapphire 
1.41-Carat Rich Teal Montana Sapphire 
4.34-Carat Peacock Blue Montana Sapphire (Heated) 
1.39-Carat Rich Blue Montana Sapphire (Heated) 
0.94-Carat Mint Green Grossular Garnet 
0.99-Carat Sky Blue Montana Sapphire (Heated) 
1.48-Carat Nasarawa Teal Aqua 
0.70 Aqua-Blue Bicolored Montana Sapphire (Heated) 
0.50-Carat Violet-Pink Particolored Montana Sapphire 
0.87-Carat Aqua Blue Montana Sapphire (Heated) 
1.53-Carat Magenta Purple to Intense Pink Color Change Garnet 
1.45-Carat Rich Aqua Blue Montana Sapphire (Heated) 
1.86-Carat Medium Blue Montana Sapphire (Heated) 
0.66-Carat Light Yellow Montana Sapphire 
1.14-Carat Pale Aqua Montana Sapphire 
1.59-Carat Nasarawa Teal Aqua 
0.90-Carat Light Blue Montana Sapphire 
1.04-Carat Medium Blue Montana Sapphire (Heated) 
0.50-Carat Purple-Pink Bicolored Montana Sapphire 
1.26-Carat Violet Ceylon Sapphire 
0.74-Carat Deep Royal Blue Ceylon Sapphire (Heated) 
2.37-Carat Green-Lime Particolored Australian Sapphire 
0.73-Carat Robin's Egg Blue Montana Sapphire 
1.72-Carat Orange-Yellow Particolored Montana Sapphire (Heated) 
1.52-Carat Violet Purple Umba Sapphire 
1.47-Carat Medium Blue Montana Sapphire (Heated) 
2.26-Carat Medium Blue Montana Sapphire 
2.26-Carat Magenta Pink Burmese Spinel 
1.90-Carat Dusky Yellow Montana Sapphire (Heated) 
0.83-Carat Sky Blue Montana Sapphire (Heated) 
0.62-Carat Greenish-Yellow Montana Sapphire 
1.24-Carat Teal Blue Montana Sapphire (Heated) 
1.44-Carat Yellow-Green Particolored Australian Sapphire 
0.84-Carat Rich Aqua Blue Montana Sapphire (Heated) 
0.94-Carat Medium Blue Montana Sapphire (Heated) 
0.56-Carat Colorless Montana Sapphire 
0.89-Carat Sky Blue Montana Sapphire 
1.54-Carat Rich Teal-Green Particolored Australian Sapphire 
1.02-Carat Peacock Blue Montana Sapphire (Heated) 
1.13-Carat Rich Blue Montana Sapphire (Heated) 
2.91-Carat Pale Pink Montana Sapphire 
1.21-Carat Teal Blue Montana Sapphire (Heated) 
1.38-Carat Pinky Lavender Montana Sapphire