Jeffrey R. Hapeman
Showing 49–72 of 2477 results
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.
1.46-Carat Yellow-Green Australian Sapphire 
1.72-Carat Peacock Blue Montana Sapphire (Heated) 
1.41-Carat Rich Purple Umba Sapphire 
0.81-Carat Light Violet-Blue Montana Sapphire (Heated) 
0.90-Carat Aqua Blue Montana Sapphire (Heated) 
0.97-Carat Tsavorite Garnet 
0.88-Carat Teal-Aqua Particolored Montana Sapphire (Heated) 
3.56-Carat Deep Blue Montana Sapphire (Heated) 
0.95-Carat Deep Royal Blue Ceylon Sapphire (Heated) 
1.01-Carat Light Sky Blue Sapphire 
1.22-Carat Rich Blue Sapphire 
1.83-Carat Medium-Sky Blue Particolored Montana Sapphire (Heated) 
1.70-Carat Pale Yellow Montana Sapphire 
1.35-Carat Golden Yellow Umba Sapphire 
0.82-Carat Medium Blue Montana Sapphire (Heated) 
0.91-Carat Teal Blue Montana Sapphire (Heated) 
2.00-Carat Olive Green Australian Sapphire 
1.19-Carat Blue-Teal Particolored Montana Sapphire (Heated) 
1.71-Carat Rich Blue Montana Sapphire (Heated) 
1.20-Carat Royal Blue Australian Sapphire 
1.81-Carat Dusky Mauve Purple Montana Sapphire 
1.19-Carat Rich Robin's Egg Blue Montana Sapphire (Heated) 
1.72-Carat Dark Green Australian Sapphire (Heated) 
0.99-Carat Hot Pink Madagascar Sapphire 
0.70-Carat Blue-Yellow Particolored Montana Sapphire 
1.28-Carat Pale Aqua-Yellow Particolored Montana Sapphire (Heated) 
0.70-Carat Peachy Pink Montana Sapphire 
1.08-Carat Yellow-Green Particolored Australian Sapphire (Heated) 
1.83-Carat Medium Blue Montana Sapphire (Heated) 
2.13-Carat Rich Blue Montana Sapphire (Heated) 
1.70-Carat Ruby (Heated) 
1.03-Carat Royal Blue Ceylon Sapphire (Heated) 
1.47-Carat Medium Blue Montana Sapphire (Heated) 
1.26-Carat Teal Blue Montana Sapphire (Heated) 
1.33-Carat Cornflower Blue Ceylon Sapphire 
0.85-Carat Steely Deep Blue to Purple Color Change Montana Sapphire (Heated) 
1.41-Carat Cornflower Blue Ceylon Sapphire 
2.60-Carat Gold-Green Particolored Australian Sapphire 
0.89-Carat Medium Blue Montana Sapphire (Heated) 
1.59-Carat Colorless Montana Sapphire (Heated) 
1.62-Carat Deep Green Australian Sapphire 
0.78-Carat Yellow-Gold Particolored Montana Sapphire (Heated) 
1.36-Carat Sky Blue Montana Sapphire (Heated) 
1.41-Carat Aqua Blue Montana Sapphire