geologypage: Corundum | #Geology #GeologyPage #Mineral Localty:Umba River (Umba Valley), Tanga Region, Tanzania Size: 3.0 x 2.5 x 5.5 cm Photo Copyright © MIM Museum Geology Pagewww.geologypage.com
tags: So many OTPs,
from: https://eikuuhyo.tumblr.com/post/158169243648