Gemini 2nd decan
10° - 20°·Subruled by Libra
Second decan of Gemini (10°–20°). Subruled by Libra - blends Gemini's air nature with Libra's qualities.
Traditional reading
Libra subrules the middle decan of Gemini in the modern triplicity scheme, so Venus tempers Mercury between 10 and 20 degrees. Commentators characterize this band as air socialized: the sign's scattered curiosity organizes itself around people, aesthetics and agreement. Typical descriptions feature charm layered over cleverness, a diplomatic instinct that argues both sides gracefully rather than for sport, and taste in words, dress and company that runs more polished than the first decan's cheerful clutter. The Gemini need for variety persists in these portraits, but it seeks partners and conversation salons rather than solitary rabbit holes.
Chaldean face tables assign these degrees to Mars instead, one of the sharper contrasts between the two systems. Medieval astrologers reading Mars in the second face of Gemini attached images of exertion and pursuit, an energetic gloss quite unlike the Venusian smoothness of the triplicity reading, and the disagreement is a reminder that faces ranked lowest among the five essential dignities. In Hellenistic practice the decans also served in medical and magical astrology, each ten-degree segment linked to talismanic images described in later compilations.
Gemini archetype
Gemini is the diurnal domicile of Mercury. Mutable air, traditionally tied to exchange and pairing.
Libra subruler archetype
Libra is the diurnal domicile of Venus and exaltation of Saturn. Cardinal air, traditionally tied to weighing and judgment.
Other Gemini decans
Reference, not advice
This is cultural and astronomical reference, not personal prediction or advice.
The triplicity decan system assigns each decan a subruler from the sign's element triplicity, in zodiacal order. This is the modern Western convention; classical Hellenistic decan assignments (Chaldean order) differ. See methodology.
Last reviewed .