Blue Paraiba Tourmaline

Electric blue Paraibas command premium prices because they represent the most coveted and recognizable color expression of the copper effect in these rare gems. The neon blue hue is considered the definitive Paraiba color that originally captivated the gem world when discovered in Brazil in 1989. This specific color exhibits maximum fluorescence under light, creating unparalleled visual impact. The combination of this aesthetic appeal with natural rarity makes pure “swimming pool blue” Paraibas worth substantially more, often 30-40% higher in cost than their green or teal counterparts.

Copper content directly determines the distinctive neon luminosity in blue Paraiba tourmalines. Higher copper concentrations (typically 0.8-2.0% by weight) produce the most intense electric blue glow, creating the internal radiance that defines premium specimens. The copper ions absorb light in specific wavelengths and re-emit it in the blue spectrum with remarkable efficiency. This creates the optical illusion that the stone is internally illuminated—a phenomenon unique to genuine copper-bearing tourmalines and directly proportional to copper content.

When purchasing blue Paraiba tourmalines, collectors should prioritize color intensity (the “neon factor”), evaluating how the stone appears in different lighting. Superior specimens maintain their electric glow even in dim conditions. Next, assess clarity—while Paraibas typically contain some inclusions, fewer visible flaws increase value. Size dramatically affects worth as high-quality material over 3 carats is exceptionally rare. Finally, examine cut quality, as proper faceting maximizes the stone’s inherent luminescence. Certificate documentation from reputable laboratories confirming copper content is essential for authenticating real Paraiba status.

Yes, blue Paraiba tourmalines exhibit moderate pleochroism, displaying subtle color variations depending on viewing angle and light source. When moved from daylight to incandescent lighting, high-quality blue Paraibas may shift slightly toward a more intense neon blue or acquire subtle greenish undertones while maintaining their characteristic glow. This natural color variation differs from common color-change gems like alexandrite, as Paraibas retain their fundamental electric blue identity rather than dramatically transforming. This stability of color across lighting conditions is actually considered a valuable attribute in fine specimens.