The crystals market was valued at US$ 21.8 billion in 2025 and is expected to reach US$ 43.15 billion by 2034; it is estimated to record a CAGR of 7.88% during 2026–2034. Crystals—encompassing specialized optical crystals, nonlinear optical (NLO) materials, laser host crystals, piezoelectric crystals, and semiconductor substrate crystals—deliver exceptional light...