Alexandrite

Discover Gemdrop® lab-grown alexandrite and colour-change corundum: two distinct crystalline gem materials united by their remarkable ability to display different colours under different lighting conditions. Lab-grown alexandrite is genuine crystalline chrysoberyl (BeAl₂O₄), while colour-change corundum is crystalline aluminium oxide (Al₂O₃), with carefully incorporated trace elements producing their distinctive colour-changing optical properties. Created using advanced crystal growth techniques, these extraordinary gems combine fascinating optical behaviour with exceptional beauty and durability. Every gem is individually scientifically verified in the UK, permanently recorded in the Gemdrop® Verification Database, and protected by the Gemdrop® Lifetime Authenticity Guarantee.