Lab-Grown Blue Diamonds

Lab-grown blue diamonds get their colour from boron introduced into the HPHT growth environment, substituting for carbon atoms to create a Type IIb diamond whose lattice selectively absorbs red and yellow light, yielding a consistent, saturated blue directly as the crystal forms with no post-growth treatment required. Because the colour is inherent to the stone's structure from growth, hue is stable and uniform. Intensity grade remains the primary value differentiator across the Fancy Light to Fancy Vivid range.