Just received the interchangeable pendant set and since it does not have any reviews as of now, and the item is so unusual I will try to give a very detailed review as I wish one was posted when I made the purchase.Packaging: The box is nice and large, almost the size of a VHS tape, and it carries the pendant with all 12 additional stones. It looks expensive and very different from regular jewelry. It will make for a very impressive gift.Quality: I am no expert but the pendant looks very well made. Nice detail work on back and side, chain is a little thin but looks well made too. Additional birthstones included are large, brilliant and have nice colors.How it works: The back of the pendant pulls open, the stone comes out and you put a different stone in. Simple and easy. A small rubber ring was sitting in the back of the stone, but I don't know if you really need to use it as the stone sits well without it. A small tool came in the box to pull the back open, but I just do it with my finger. If the stone does not sit straight down, you need to re-adjust it in order for the back to close properly. Overall switching the stone is pretty easy and quick.Lifetime Warranty: Good to know you get one with the pendant just in case.Bonus: You can't possibly mess up. Purchasing jewelry I always had a problem guessing what color stone she may want or need....now I can't possibly mess up as she can choose what color to wear herself.Conclusion: This is a great idea. The price is comparable to a regular pendant but you get 12 pendants instead of just one. Stones can change in color to match her mood or outfit.Presentation is really good and it will make for a very good gift.I purchased 2 different sets, ad I am very happy with what I got.Hope this helps.I can't be happier with this purchase. I really got 12 pendants for the price of 1.The pendant is classic and unique at the same time. Fun, very practical and very, very memorable.I got 3 different sets as holiday gifts: Blue Topaz, Sapphire and Emerald, but the 3 sets are basically the same one, as each pendant can have any of the 12 stones in it.They arrived very fast and they look great and I am sure they will be a big hit!You get inside a nice box one pendant on a chain, and 12 different stones that can go in it.The whole presentation if fun, impressive and looks very high end.You notice right away that this pendant is very well made, classic, clean design, and it feels substantial. The 12 round stones are larger than I expected, and the changing mechanism looks very secure and it's easy to work.I have to admit that I spent probably 20 minutes playing with the different stones, putting them in and out of the pendant. It's amazing how the same pendant can look so different with a different color stone in it, and it's amazing how fast and easy you can go from having a ruby pendant to a sapphire pendant.Inside the box a small key was included if you don't want to use your nail to open the back to switch the stone. A Lifetime warranty also came with the pendant, along with an instruction page.This is probably the perfect gift as you can stop guessing as what color stone you should get. You get them all so you can't really go wrong.I can't be happier with this purchase. I really got 12 pendants for the price of 1.The pendant is classic and unique at the same time. Fun, very practical and very, very memorable.I got 3 different sets as holiday gifts: Blue Topaz, Sapphire and Emerald, but the 3 sets are basically the same one, as each pendant can have any of the 12 stones in it.They arrived very fast and they look great and I am sure they will be a big hit!You get inside a nice box one pendant on a chain, and 12 different stones that can go in it.The whole presentation if fun, impressive and looks very high end.You notice right away that this pendant is very well made, classic, clean design, and it feels substantial. The 12 round stones are larger than I expected, and the changing mechanism looks very secure and it's easy to work.I have to admit that I spent probably 20 minutes playing with the different stones, putting them in and out of the pendant. It's amazing how the same pendant can look so different with a different color stone in it, and it's amazing how fast and easy you can go from having a ruby pendant to a sapphire pendant.Inside the box a small key was included if you don't want to use your nail to open the back to switch the stone. A Lifetime warranty also came with the pendant, along with an instruction page.This is probably the perfect gift as you can stop guessing as what color stone you should get. You get them all so you can't really go wrong.Product was received on time and intact, the necklace and gems came in a very nice jewelry box that is perfect for keeping these gems together and organized. I was a little concerned that the quality wouldn't be great with the low price but I was completely wrong. It is a beautiful piece and is so versatile I know I will wear it all of the time.Don't expect anything more than something lightweight for casual wear. I bought two as Christmas gifts and paid $89. The reaction to the concept (12 in 1) was much more enthusiastic than to the actual product.I received this necklace for Mother's Day. I love it. The packaging is very nice. The pendant is beautiful. The chain is a perfect length. It is very easy to change out the stone. A tool is provided to open the back. I love that I can change the color of the pendant to match what I am wearing for the day. I would highly recommend this to anyone. It makes a lovely gift.I'm not normally the sort of guy who gives jewelry for gifts, but this necklace appealed to the programmer in me - the gem and necklace are decoupled, allowing reuse, and the gems are polymorphic - altogether a solid OO design of sparkly goodness! The recipient was also quite enthralled by being able to hold the gems (it comes with the 12 birthstones, most simulated) in her hand.