Mystical Angels - Im reading some tarot cards but there different what would (Father of stones) come under?

Im reading some tarot cards but there different what would (Father of stones) come under?

as im only used to knowing them as pentacles, swords, cups and wands.

This would be the King of Pentacles. Pentacles are the suit of the element of Earth and stones similarly represent the element of Earth. The other elemental correspondences of the tarot are: Swords - air Wands - fire Cups - water Sounds like an interesting pack.
Pentacles. King of pentacles is known as the oldest of the kings.
I'm pretty sure stones would be pentacles, as it says in The Cartomancer's Key: "Typically the suits are Hearts, Spades, Diamonds, Clubs; quite rarely when dealing with very old decks, novelty decks or those of foreign origin these might vary. In such cases there is traditionally ... an attractive item corresponding to Diamonds, typically something man-made (coins, bells, gems, tiles) ... Tarots are divided into four suits, which correspond to and vary similarly to those of Playing Cards." Stones would be like tiles or gems. As for Father... I'd guess it's probably the same as the king but it would help if you said what the full court is in this deck. If it's father-mother-son-daughter then that's correspondingly king, queen, knight, page. If it's something else then that might not be the case.
The foundation stone philosophers stone?