Vulkán mélységesen Kösz schreger lines in ivory kényelmes elem Decimális
Saving Elephants
Are these Schreger lines? I found what I think is a piece of mammoth ivory. I'm holding a smaller fragment of it to show what I think are schreger lines on the
Ivory, bone and fake ivory | Looking at Artifacts and Ideas
IDENTIFICATION AND DIFFERENTIATION OF THE ASIAN ELEPHANT IVORY BY USING SCHREGER LINES
Resin Imitation Ivory with a Pseudo “Engine-Turned” Structure | Gems & Gemology