Systematic under-valuation of natural capital is creating growing macro-financial risks and raises the prospect of a “Nature’s Minsky Moment,” in which ecosystem degradation triggers abrupt asset repricing, a dynamic now increasingly recognised by central banks and supervisors as relevant to financial stability and capital adequacy. This article reviews existing nature-finance instruments and shows why carbon-centric and project-based approaches remain insufficient to close the global nature funding gap. It advances a framework that treats nature as critical infrastructure and examines how recent advances in NatureFinTech enable continuous, high-resolution measurement of ecosystem condition. Building on these capabilities, the paper introduces Nature Equity as an outcome-based asset class linked to verified ecosystem integrity. While early applications demonstrate promise, challenges remain in regulation, valuation, and market maturity.