Need help IDing finds from Southern Africa and Costa Rica

[owleyes]

Need help ID'ing finds from Southern Africa and Costa Rica

Hi everyone! First time poster here, but I've been admiring everyone's finds as a lurker for a while now. I am a complete novice when it comes to rocks/minerals--mostly I go on vacation and happen to come across (what I think) are cool stones. I'm trying to label my collection, so if anyone can assist I would greatly appreciate it! Please let me know if you need bigger/additional photos!

This one is from Namibia:




These I picked up from a riverbed in Kenya


I found this in the same riverbed, not a diamond (I could read through it):



This yellow stone is translucent, also found in the area:




This one I found in Botswana:




These were in the same riverbed in Costa Rica, it's got some dendrite:



This one is brighter in real life:


This last one is from NJ. I found it in the Ogdensburg area, which I'm going to take a stab at ID'ing--Pink Calcite with Franklinite? Would calcite have these types of striations?




Thank you!!!

 

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[Eu_citzen]

Please try a less distracting background for pics. Just plain white paper would do.

The last one is probably K feldspar, though.

 

[owleyes]

Thanks for the suggestion, I'll upload some better photos!

 

[owleyes]

Ok hopefully these are a little better! I took some new pics of the ones I thought were really interesting.

 

[owleyes]

Oops, forgot to add these:

 

[Eu_citzen]

Most seem to be chalcedony.

 

[owleyes]

Cool, thanks!