The item is a drilled deer's tooth. Top edge is broken.
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1. Shalagina A., Bomann M., Kolobova K., Krivoshapkin A. Bone needles from the Upper Paleolithic complexes of the cave Strashnaya (northwestern Altai) // Theory and practice of archaeological research. – №1 (21). – 2018. – P. 94
2. Krivoshapkin, A., Shalagina, A., Baumann, M., Shnaider, S., & Kolobova K. Between Denisovans and Neanderthals: Strashnaya Cave in the Altai Mountains. Antiquity, 92(365). P. 2., Figure 4.5 https://doi.org/10.15184/AQY.2018.221