Pukhraj is the stone most often described as safe for anybody. It is licensed for exactly the same three ascendants out of twelve as every other stone in the set.

A stone feeds one planet, so it points somewhere, and a direction can be wrong. Work the rule out properly and every stone comes out licensed for three ascendants and refused by three.

Neelam has the fiercest reputation of the nine and the trial period folklore to match. The licensing question is simpler than the folklore and it has a fixed answer.

The second stone with no rule behind it, and the one whose japa count is most out of proportion to its period. Ketu asks 17,000 repetitions against a seven year dasha.

Gomed is not licensed for anybody and not refused for anybody, and that is not a gap in our table. It is a gap in the framework, and it affects a fifth of all readers.

Two of the eight kootas hold fifteen of the thirty-six points and both score all or nothing, which is why so many matches fail on arithmetic rather than on anything anyone observed.

Panna clears three ascendants and one of them gets a stone that is simultaneously licensed and a killer. Those are two different axes and both readings are correct.

Nineteen thousand repetitions is the second heaviest count in the set, and the name is the one piece of vocabulary in this cluster that means two different things.

Ten thousand repetitions against the joint shortest mahadasha in the system. Measured per year of period, only Ketu asks more, and the gap is not small.

Nine thousand repetitions against the second longest period in the system. Per year of dasha it is the lightest ask of the nine, and Wednesday has an oddity of its own.

Sixteen thousand repetitions against the longest period in the system, and a third of people never live through that period at all.

The biggest count in the navagraha set, and the graha whose stone this site's own software warns about. Twenty four minutes a day for six weeks, which is the honest number.