H = Heating
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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.
2.75-Carat Colorless Sapphire 
0.94-Carat Medium Blue Montana Sapphire (Heated) 
1.97-Carat Deep Blue-Green Montana Sapphire (Heated) 
1.66-Carat Rich Purple Ceylon Sapphire (Heated) 
1.11-Carat Spruce Green Montana Sapphire 
1.48-Carat Deep Purple-Peach Particolored Umba Sapphire 
1.26-Carat Deep Blue-Green Montana Sapphire (Heated) 
2.37-Carat Autumn Orange Tourmaline 
0.88-Carat Sky Blue Montana Sapphire (Heated) 
3.95-Carat Bright Violet-Blue Tanzanite 
1.54-Carat Green-Yellow Particolored Montana Sapphire 
0.71-Carat Light Aqua Blue Montana Sapphire 
2.36-Carat Yellow-Green Particolored Australian Sapphire 
0.82-Carat Yellow-Green Particolored Australian Sapphire (Heated) 
1.03-Carat Teal Blue Montana Sapphire (Heated) 
1.34-Carat Peacock Blue Montana Sapphire (Heated) 
0.77-Carat Bright Green Colombian Emerald (Oiled) 
2.56-Carat Rich Cornflower Blue Ceylon Sapphire (Heated) 
0.90-Carat Sky Blue Montana Sapphire 
1.66-Carat Royal Blue to Purple Color Change Ceylon Sapphire 
1.93-Carat Aqua Green Montana Sapphire (Heated) 
0.89-Carat Aqua Blue Montana Sapphire (Heated) 
0.97-Carat Pink-Lavender Particolored Umba Sapphire 
0.88-Carat Teal Blue Australian Sapphire (Heated) 
1.39-Carat Kiwi Green-Dark Blue Particolored Australian Sapphire 
1.65-Carat Deep Peacock Blue Montana Sapphire (Heated) 
3.52-Carat Cornflower Blue Ceylon Sapphire 
0.76-Carat Blue-Yellow Particolored Montana Sapphire (Heated) 
2.31-Carat Rich Teal Australian Sapphire (Heated) 
1.44-Carat Blue-Yellow Particolored Montana Sapphire (Heated) 
2.54-Carat Royal Blue Ceylon Sapphire (Heated) 
1.35-Carat Blue-Teal Bicolored Montana Sapphire (Heated) 
0.81-Carat Teal Blue Montana Sapphire (Heated) 
0.85-Carat Sky Blue Montana Sapphire 
2.13-Carat Deep Blue Montana Sapphire (Heated) 
0.85-Carat Teal Blue Montana Sapphire (Heated) 
0.70-Carat Teal Blue Montana Sapphire (Heated) 
1.42-Carat Peacock Blue Montana Sapphire (Heated)