It makes sense of stones and sealing similar to brain tanning

[link to www.timesofisrael.com (secure)]

Tiny First Temple seal impression found with name of Bible-era royal steward
Inscribed with ‘Belonging to Adoniyahu, Royal Steward,’ a clay sealing from the 7th century BCE uncovered from earth excavated at the foundations of the Western Wall


[link to en.wikipedia.org (secure)]

A bulla (Medieval Latin for "a round seal", from Classical Latin bulla, "bubble, blob", plural bullae) is an inscribed clay or soft metal (such as lead or tin) or bitumen or wax token used in commercial and legal documentation as a form of authentication and for tamper-proofing whatever is attached to it (or, in the historical form, contained in it). In their oldest attested form, as used in the ancient Near and Middle East of the 8th century BCE onwards, bullae were hollow ball-like clay envelopes that contained other smaller tokens that identified the quantity and types of goods being recorded. In this form, bullae represent one of the earliest forms of specialization in the ancient world, and likely required skill to create.[1]:24 From about the 4th century BCE onwards, as communications on papyrus and parchment became widespread, bullae evolved into simpler tokens that were attached to the documents with cord, and impressed with a unique sign (i.e. seal)[1]:29 to provide the same kind of authoritative identification and for tamper-proofing. Bullae are still occasionally attached to documents for these purposes (cf. papal bull).



Oh I see what clay and iron rod meaning could be within. Especially with lds temple sealing.
Reminds of the envelope v sign on the forehead dream. Lol