Curious about what I bought at the thrift store. Google image search returns agate and petrified wood, but I really don’t know.

I think that’s what this specimen is but not sure. What do you think. It’s pretty large piece. Hand size

This piece was found in Brazil, no idea what region

What am I looking at here?! I know the yellow and purple Fluorite. I thought it was a layer of something black but now I'm wondering if it's really, really super dark purple? And what's on top of it? I don't have any locality information.

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Can anyone please help me identify and point me in the right direction to have this appraised? Any info is greatly appreciated .

I think that’s what this specimen is but not sure. What do you think. It’s pretty large piece. Hand size

I recently acquired this mineral specimen from Lavrion (Lavrio), Attica, Greece. It weighs 219.73 g.

The specimen features numerous solid, rounded to botryoidal formations on a brown, oxidized matrix.

The formations display pale green, blue-green and whitish coloration, with some areas showing more intense green and blue patches.

Under a USB digital microscope, certain areas appear translucent, with a glassy to waxy appearance.

I gently cleaned a few areas with a little water to remove surface dust. The formations became more translucent when wet and slightly duller again after drying.

The rounded formations feel solid rather than soft or powdery.

I haven't been able to identify the mineral with certainty.

Any help with identification would be greatly appreciated!

This mineral specimen from Xanthi, northeastern Greece, features an interesting combination of quartz and epidote.

The specimen features white to translucent quartz crystals growing within small cavities and across a green to yellowish-green epidote matrix.

The quartz displays elongated prismatic crystals and smaller crystal clusters, creating a distinct contrast with the surrounding epidote.

Locality: Xanthi, Greece

Weight: 141.95 g

Tenho essas amostras mas não sei por onde começar o polimento (não terminei todas), são minhas primeiras e queria saber se alguém tem uma dica que possa me dar uma direção.

Tenho lixas d'água até 3.000, abrasivo e feltro.

I know these aren’t particularly rare or special, but it’s special to me and the first mineral I bought since collecting again. It’s quite tall and has a custom stand so really want to put it back together. Left it in my checked bag and it broke, so really looking for ways to put it back together. Was thinking of some kind of black epoxy or something, any recommendations would be greatly appreciated! Also if there are any suggestions on how to stick things back as well, given its oddly shaped and weight I imagine it may be awkward keep its shape while drying.

I recently acquired this specimen from Lavrion (Lavrio), Attica, Greece. It weighs 285.49 g.

The yellow mineral forms a very fine yellow to yellow-green coating on a strongly oxidized brown matrix. Individual crystals are very difficult to distinguish with the naked eye.

Under a USB digital microscope, it appears to consist of extremely small needle-like or prismatic crystals, often forming radiating clusters or rosette-like formations.

I also tested it under 365 nm UV light, and the yellow mineral showed no obvious fluorescence.

There are also clear/white crystals present on another part of the specimen.

Does anyone recognize the yellow mineral or have any suggestions for a possible identification? Any help or opinions would be greatly appreciated.

Just curious about this ring! It is sterling silver.

I'm a web developer and lifelong mineral collector. I recently built https://mineralshows.com/ because I wanted to make a map showing where all the upcoming mineral shows are, worldwide. I thought it might be useful to others. Anyone can submit listings and listing corrections. I welcome constructive feedback! Note to moderators: the site I am linking to offers no minerals for sale; it is a directory of mineral shows.

My guess is botryoidal druzy quartz and limestone, but I’m still learning a lot so any help is appreciated!

I found a few pieces like this and CANNOT WAIT AAAAA, so so excited seeing this and bluish white agates! Would you say this is a good quality sample for a freebie I found in the wild? Or is it still cool but still super common like quartz is?

The quartz in the 3rd picture and the two polished stones at the end were free samples they gave away.

Has anyone seen one like this before? I can't seem to. I bought it out of an old collection

I have this unidentified stone. I decided I should use my UV light to help, and noticed these little bits were shedding everywhere on my hands and other stones. The first pic seems to be the source. Any ideas on what this stone is, how to keep it from shedding, and if the shed is harmful? What do I do? Be kind I'm fairly new to stone identification.