gemmesco
Could not find gemmescit in Logeion dictionaries.
gemmescit Verb: present active indicative 3rd singular of gemmesco
gemmesco, ĕre, v. inch. n. [gemma, II.],
- to become a gem, Plin. 37, 10, 57, § 158.
gemmēsco, ere (gemma), zum Edelsteine werden, Plin. 37, 158.
See: gemmescere
gemmēscō, ĕre (gemma), intr., devenir pierre précieuse : Plin. 37, 158.