The dorsal scales of T. princeps are an olive-tinted grey color, and the underbelly is an off-white. They have blue spots edged with black on their sides. Adult males have blue around their mouths, and adult females often have dark olive-green or black heads.
The outer row of ventral scales are smooth, and there are 13-17 femoral pores on each side.
Juvenile T. princeps often have less spotting on their backs, in comparison to the spotting found on adults.
Blanford WT (1876). Eastern Persia: An Account of the Journeys of the Persian Boundary Commission 1870–71–72. Vol. II. Zoology and Geology. Published by the Authority of the Government of India. London: Macmillan and Co. viii + 516 pp. + Plates I-XXVIII. (Lacerta princeps, pp. 364–367 + Plate XXIV).
Boulenger GA (1887). Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume III. Lacertidæ ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xii + 575 pp. + Plates I-XL. (Lacerta princeps, pp. 18–19).
Mayer, Werner; Bischoff, Wolfgang (1996). "Beiträge zur taxonomischen Revision der Gattung Lacerta (Reptilia: Lacertidae). Tiel 1: Zootoca, Omanosaura, Timon und Teira als eigenständige Gattungen [Contributions to the taxonomic revision of the genus Lacerta (Reptilia: Lacertidae). Part 1: Zootoca, Omanosaura, Timon and Teira as full genera]". Salamandra32 (3): 163–170. (Timon princeps, new combination, p. 169). (in German, with an abstract in English).