Platinum isn't a coin — platinum is a cube. Pure, cold, heavy. Geometry instead of roundness. LOVE Platinum is a cube-shaped ingot, backed by 1 g of LBMA platinum, on Stellar.
Platinum is 15× rarer than gold. Culture doesn't say 'platinum coin' — it says platinum bar, ingot, jewelry. The cube shape honors its industrial nature.
Chemical inertness
Doesn't corrode. Ideal for lab vessels and implants.
High-end jewelry
Whiter than white gold, with no plating.
Horology
Premium watch cases — Patek, AP, Lange.
Scarcity
All platinum ever mined would fit in a ~25-foot cube.