r/whatsthisrock is a subreddit with 703k members. The community frequently discusses rock, found, found in, identify, and what, and the most common flair used is request and identified.
Dedicated to identifying mysterious rocks and minerals.
Popular Topics in r/whatsthisrock
#1
Rock
248 posts
#2
Found
211 posts
#3
Found In
64 posts
#4
Identify
55 posts
#5
What
27 posts
#6
What Is
23 posts
#7
Stone
23 posts
#8
Beach
22 posts
#9
Type
21 posts
#10
Find
19 posts
Flair Used in r/whatsthisrock
#1
REQUEST
: "Thrift find, too pretty to leave behind. Any idea what this is?"
96 posts
#2
IDENTIFIED
: "Anyone could help identify this rock would be great found in Richmond Maine near the river."
2 posts
Member Growth in r/whatsthisrock
Yearly
+96k members(15.7%)
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About
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Last updated: November 5, 2026