Venus with Ketu in the 8th House

Venus conjunct Ketu in the 8th house places the karaka of marriage, comfort, and agreement with the node of severance in the house of longevity, secrecy, inheritance, and sudden change. Relationships tend to pass through a crisis, a secret, or a transformation, and pleasure is not straightforward. Rahu occupies the 2nd, because the nodes are opposite, so speech, family, and savings carry the north node while Venus and Ketu sit in the 8th.

The result depends on whether Venus owns good houses. A dusthana Venus in the 8th is a hard karaka. A yogakaraka Venus in the 8th is the chart's best planet under strain.

Venus is debilitated in Virgo. If the 8th is Virgo, the lagna is Aquarius, and Venus rules the 4th and the 9th, which makes Venus yogakaraka. The best functional planet for that lagna is then fallen, in the 8th, with Ketu. Home and fortune are tied to the break house and to severance. That is a specific chart, not the meaning of every Venus-Ketu pair.

In other 8th signs Venus may be in its own Taurus or Libra, or exalted if the 8th could be Pisces, which would make the lagna Leo. Venus exalted in the 8th with Ketu is a strong karaka in a difficult house, a different sentence from the Virgo case.

Venus mahadasha lasts 20 years and Ketu's lasts 7. Both can activate the conjunction. Venus-Ketu antardasha inside the 20 is the tightest overlap. Marriage questions in those years should also check the 7th lord, who may not be Venus. For Aquarius the 7th lord is the Sun. A fallen Venus in the 8th does not replace the Sun as marriage lord. It damages the karaka and the 4th and 9th.

Diamond would strengthen Venus. Strengthening a debilitated 8th-house Venus with Ketu needs a reason beyond fear. The Navamsa can show a Venus that recovers. Read that before you buy the stone.