The Geo. Graham Orrery Tourbillon integrates a mechanical solar system model with meteorites as planets. It is just $330,000. From Graham1965's description of the dial:
Blue lacquered dial with Geo.Graham Tourbillon Orrery inscription at 4 o'clock
3 scales – from the outside to the centre: hours and minutes scale, Gregorian calendar (365.25 days – Earth indicates the date), Zodiac scale (12 astrological signs – Earth indicates the zodiac sign). Counter-clockwise reading.
Solar system: The Moon (from NWA4881 meteorite, Ø0.90 mm)
The Earth (Kingman Turquoise, Ø3.20 mm)
Mars (Tissint meteorite, Ø1.70 mm)
The Sun (pink gold (18K) – hand-engraved Tourbillon bridge with 2 Phoenix heads inspired by George Graham decoration and a close set diamond at the centre (Ø2.50mm). Counter-clockwise reading.
Off-centre skeleton pink gold (18K) hands with black Super-LumiNova coating
(via Uncrate)
