Are those randomly generated?
I'm looking at the uncompressed save files, and indeed, they're randomly generated metals! They seem to have similar material properties to adamantine. Not only that, but they have spheres and are apparently divine.
EDIT: Here's what one of these look like.
[INORGANIC:DIVINE_1]
[GENERATED]
[DIVINE]
[DISPLAY_COLOR:3:0:1]
[BUILD_COLOR:3:0:1]
[STATE_COLOR:ALL_SOLID:CLEAR]
[USE_MATERIAL_TEMPLATE:METAL_TEMPLATE]
[STATE_NAME_ADJ:ALL_SOLID:translucent metal]
[MATERIAL_VALUE:300]
[SPEC_HEAT:7500]
[MELTING_POINT:NONE]
[BOILING_POINT:NONE]
[ITEMS_WEAPON]
[ITEMS_WEAPON_RANGED]
[ITEMS_AMMO]
[ITEMS_DIGGER]
[ITEMS_ARMOR]
[ITEMS_ANVIL]
[ITEMS_HARD]
[ITEMS_METAL]
[ITEMS_BARRED]
[ITEMS_SCALED]
[SOLID_DENSITY:1000]
[LIQUID_DENSITY:1000]
[MOLAR_MASS:20000]
[IMPACT_YIELD:1000000]
[IMPACT_FRACTURE:2000000]
[IMPACT_STRAIN_AT_YIELD:0]
[COMPRESSIVE_YIELD:1000000]
[COMPRESSIVE_FRACTURE:2000000]
[COMPRESSIVE_STRAIN_AT_YIELD:0]
[TENSILE_YIELD:1000000]
[TENSILE_FRACTURE:2000000]
[TENSILE_STRAIN_AT_YIELD:0]
[TORSION_YIELD:1000000]
[TORSION_FRACTURE:2000000]
[TORSION_STRAIN_AT_YIELD:0]
[SHEAR_YIELD:1000000]
[SHEAR_FRACTURE:2000000]
[SHEAR_STRAIN_AT_YIELD:0]
[BENDING_YIELD:1000000]
[BENDING_FRACTURE:2000000]
[BENDING_STRAIN_AT_YIELD:0]
[MAX_EDGE:12000]
[SPHERE:MOON]
EDIT2: There's also divine cloth and armour, as it turns out. Presumably these are what the gods wear?