The global monetary order is shifting and the shift is not subtle. The U.S. dollar, long unchallenged at the center of international finance, now faces serious pressure from three converging forces: geopolitical fractures, financial sanctions, and deliberate moves by central banks to diversify their reserve holdings. This study examines, with empirical rigor, how de-dollarization has progressed and how gold's monetary role has evolved between 2000 and 2026. Drawing on high-frequency data from the IMF's COFER database, the World Gold Council, and the International Financial Statistics database. The analysis integrates multiple authoritative sources to build a coherent picture of reserve composition globally. To capture dynamics that standard regression would miss, the study uses a three-part methodological framework quantile-on-quantile (QQ) regression, causality-in-quantiles testing, and descriptive trend analysis. Together, these tools allow us to examine how gold and equity markets behave under different conditions: calm periods, bull runs, and crises. The dollar's share of global reserves has fallen to 57.74%a meaningful retreat from its earlier dominance. Even more notable. Official gold holdings worldwide now stand at $3.909 trillion, nearly matching the $3.920 trillion held in U.S. Treasury securities by foreign governments. For the first time in modern monetary history, gold and Treasuries are effectively at parity in central bank portfolios. However, this gold accumulation is not broadly distributed. It is concentrated in a handful of emerging economies notably Russia (1,894 tonnes), China (1,807 tonnes), Turkey (705 tonnes), and India (523 tonnes). Importantly, most of these countries are not systematically reducing dollar holdings alongside their gold purchases. The exception is where geopolitics directly drove the decision, as in Russia's case. The QQ regression uncovers a clear and counterintuitive pattern: gold's relationship with equity markets is U-shaped. Gold delivers its strongest gains at the extremes either as a safe-haven asset during sharp stock market crashes (β = −3.37 at τ = 0.10, θ = 0.10), or during exceptional equity bull markets (β = +3.16 at τ = 0.95, θ = 0.90). In between, in ordinary or muted market conditions, gold's role is far less pronounced. Causality-in-quantiles testing reinforces this picture. Stock market returns predict gold outcomes only when gold is already performing exceptionally well that is, in the upper tail of gold's distribution (τ = 0.90, p = 0.046; τ = 0.95, p = 0.013). In normal conditions, no such predictive link emerges. This tells us something important: gold does not respond to markets uniformly it responds selectively, and only under specific regime conditions. Taken together, these findings point to a monetary system in gradual but genuine transition. It is becoming more pluralistic but carefully so. For most countries, this reflects portfolio diversification, not a deliberate campaign to dethrone the dollar. Gold's role, meanwhile, is not universal it is regime-dependent, activated by crisis or exceptional growth, and largely dormant in between. The dollar remains dominant however it is no longer unquestioned.