This is a lot of 12 (twelve) syenite stones. Syenite is a coarse-grained, instrusive igneous rock that is similar to granite. It contains UV-reactive sodalite crystals that glow bright orange when exposed to long-wave UV light. Under normal lighting conditions, they look greyish with black inclusions. These stones originate from a locality in India and they have been tumble polished. Similar stones are found in parts of Canada and Michigan and are traded under the name "Yooperlite".
You get a lot of 12 stones (twelve).
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing 12 stones (twelve) similar to the ones shown. Note, each stone and lot is unique, so the appearance may vary slightly. NOTE : the UV photos show my entire stock of stones to better demonstrate the fluorescence (you get 12 stones).