Shipping was incredibly quick and the stone came very well packaged. Plenty of information on the gem also was included, which is very much appreciated. Prices were much more reasonable here for both cut and raw stones, I’ll be back to purchase more.

Katerina always offer EXCEPTIONAL QUALITY AND VALUE!!
Thank you!😊

I purchased a beautiful rough Watermelon Oregon sunstone. Katerina was very quick to respond to my questions before my purchase, and she provided excellent service.

Price is great for clean rough, colors
(teal green, sapphires) were beautiful.

I received full, signed provenance documentation for my 13.67 ct Moravian Moldavite from Stepanovice, including detailed specifications, dimensions, and cutter attribution. In a market where documentation is often vague or nonexistent, this level of transparency and accountability stands out immediately.
The stone itself is extraordinary. Precision cut in a Dragonfly crown multi-fold triangle barion pavilion by master cutter Ian Kvoch, the craftsmanship is evident from every angle. The optical performance, symmetry, and overall execution elevate it well beyond typical faceted moldavite offerings.
Katerina was fast, transparent, and incredibly helpful from the very first message. She answered questions immediately, provided documentation without hesitation, and handled the entire process with professionalism and genuine care.
When you are investing in rare Moravian material, provenance and integrity matter. Ravenstein Gem Co. operates at a level that reflects that standard.
I am deeply grateful for the experience and would not hesitate to work with Katerina again.
I am deeply honored to own this piece.

A very unique assortment and great responsiveness. A ordered a small lot of danburite, which arrived very quickly and is cutting some beautiful gems. Thanks Katerina!

I ordered once then realized I wanted more because some pieces weren’t available elsewhere. I got 4 danburites (pink tinted-very special), 1 zircon, 1 hambergite (very rare), 1 phenakite, and 1 dragon garnet. I am actually not completely familiar with all of them but I will be and the information card was insightful. Looking forward to see what else they bring!

Ravenstein Gem Co. Is a gem of a business. The gems are top notch and beautifully represented. I purchased a pair of verdilite tourmaline from Katerina and they are absolutely stunning. Her customer service and knowledge of her product will leave you feeling confident in each purchase. Without a doubt I would recommend Ravenstein to anyone! Thank you so much!