I received 12 chunks, all of this size! Cool! Exactly what I wanted. You can tell it's real mined obsidian because of the swirl patterns on the surface where it cleaves (hard to see in the photo, sorry), and the spots of other minerals here and there. I was aware and a bit wary of how sharp the edges would be - this is what Native Americans made arrowheads out of - but I found that while you should exercise common sense, the edges don't just slice anything and it's perfectly fine to handle without getting your fingers cut. You could probably cut with it if you polished it, or tried really hard. Packaging was pretty good, a ziploc inside a box, and there was very little shards at the bottom, and in fact I wanted a few shards. I'd even hoped I could smash one to make more shards and smaller pieces, but I couldn't get it to break in the slightest. I'd love a smaller version of these as well - maybe quarter sized - as it proves impossible to cut or break them on my own.The naturally smooth obsidian is perfect for wire wrapping, although, I use the natural rough too... However, if you are regularly wrapping stones, and don't want to get the advanced stone tumbler machine and go through all the stages to tumble them yourself... a magnet tumbler, tumbles jewelry but also minorly tumbles stones, and it makes rough obsidian come out smoothed out like these ones I ordered. However, order the natural raw smooth obsidian is a much more practical choice... but don't feel stuck with excess sharp pieces. Get one of both tumblers for your wire wrapping, take it to the next level and don't waste pieces. I have both machines, and I have minorly tumbled raw rough stones from Fantasia, for my jewelry wire wrapping, but I also use the rough completely untumbled ones too.These are so nice! Packaging was good, shipped in an amazon padded envelope, the stones were in a plastic bag, inside a box.There are several different sizes and more than I expected! I put the smaller ones on doorframes and there's enough bigger pieces to put a few all over the house!You can tell they've had minimal handling.Love them!These obsidian pieces are shiny,nice and beautiful. You can see a sort of swirl in them and overall they are really nice.I bought this as a Mother's Day gift for someone who collects rocks and gemstones, and she loves them! She spent 30 minutes just pulling each one out of the bag to look at them :)Love it ? now I just have to get some diamond bits to play around and see what we make out of these. They have good energy ☮️Really nice quality. Will buy again. Very happy with size and quality.Excellent stones. True to description. I will make additional purchases and recommend!