Each wall sconce is masterfully handcrafted from premium K9 crystal blocks. Through our 15-day precision annealing process, we eliminate internal stresses to achieve flawless clarity - completely free of bubbles or cracks. Each crystal shade is first engraved on antique lathes, then hand-polished to optical-grade mirror finish (92%+ light transmittance), refracting light with diamond-like brilliance. Our three additional polishing steps beyond industry standards create museum-quality luminous art pieces.