Luxury consumption represents a complex interplay of psychological drivers, cultural identity, social status, and personal values. With globalization and digital commerce, luxury markets have shifted from elite exclusivity to widespread aspirational consumption across diverse cultures. This research examines the psychological antecedents of luxury purchasing behavior globally, synthesizing theories from consumer psychology, cross-cultural behavior, socio-economic signaling, and emotional branding. A conceptual model titled Global Luxury Purchasing Psychology Framework (GLPPF) is proposed, identifying six key dimensions: Status Signaling, Emotional Fulfillment, Cultural Identity, Self-Concept Enhancement, Social Compliance, and Experiential Value. The paper integrates literature from marketing, sociology, behavioural economics, and cultural psychology and concludes with insights for luxury marketers, global brands, and future researchers