Recommends crystals from a Vedic natal chart using house lordship rules for gem selection. This is the only API that derives crystal recommendations from a computed natal chart — not from zodiac sign or chakra preference.
WORKFLOW: BEFORE: None — this tool internally computes the natal chart. No separate natal chart call required.
AFTER: asterwise_get_crystal — get full detail (hardness, origins, affirmation, full caution text) on any recommended crystal by slug.
AFTER: asterwise_get_remedies — broader classical remedial programme alongside gem recommendations.
INPUT CONTRACT: Standard BirthData (date, time, lat, lon, timezone, ayanamsa). Defaults to Lahiri ayanamsa.
time (required): Ascendant (Lagna) is time-sensitive. Inaccurate birth time changes the Lagna → changes all house lords → changes recommendations entirely.
DO NOT CONFUSE WITH: asterwise_get_gemstone_recommendations — also a chart-based gem endpoint but uses a different engine (Atmakaraka + role-based prescription vs house lordship scoring); returns gem names not crystal database entries; does not include match_score or match_reasons.
asterwise_get_crystal_recommendations — recommends crystals by zodiac sign, chakra, or intention keyword (no natal chart computation; Western metaphysical matching, not classical Jyotish).
asterwise_get_crystal_by_planet — lists all crystals for a Vedic planet without house context — use this for reference, not prescription.
Full output and error contract: https://docs.asterwise.com/mcp/tools/get-crystal-recommendations-natal/