Hackmanite sphere
gorgeous 50mm or 2in hackmanite sphere, photo #1 is before UV and #2 is after UV. The purple becomes much darker for a few hours after being under UV light. 244 grams or 8.6oz*Hackmanite is a variety of sodalite known for its exclusive tenebrscence, meaning it changes color when exposed to UV light and then glows faintly in the dark, making it a fascinating mineral for both science and aestheticsAll sales go towards vet bills and medications for our boy who was diagnosed with congestive heart failure. A terminal disease that has no cure but meds will help slow the process..Blessed with this borrowed time*Shipping information Mercari only offers USPS from/to Alaska. The update changed shipping to ground advantage, while it is much cheaper, it is so slow. Can take 2 weeks for delivery. If you're buying for a gift, please let me know. I can change price and charge priority to ship on my ownJust an FYI, shipping is slow.