Multicomponent crystal growth technology

We apply our mature crystal growth engineering capabilities to the production of lab-grown gemstones, achieving stable, industrial-scale manufacturing.

  • Czochralski Method

    ⚙️ Principle

    High-purity raw materials are melted above their melting point in an iridium or platinum crucible to form a homogeneous molten solution. A precisely oriented seed crystal is then dipped into the melt and slowly pulled upward while rotating under carefully controlled temperature conditions. The crystal grows layer by layer along the seed crystal orientation, forming a single-crystal boule. This is currently the most mature and widely adopted crystal growth method.

    ✨ Key Features

    ⏱️ Short Growth Cycle & Scalable Production

    A single crystal boule can typically be grown within 2–3 weeks, enabling stable, continuous, and large-scale production.

    💎 Large, High-Quality Crystals

    Layer-by-layer growth produces dense crystal structures with low internal stress, allowing the cutting of larger gemstones with excellent clarity and outstanding transparency.

    🎨 Consistent & Reproducible Color

    Precisely controlled raw material composition and pulling parameters ensure uniform dopant distribution and stable color performance, delivering consistent color across gemstones from the same production series.

  • Flux method

    ⚙️ Principle

    A low-melting-point flux (such as PbO–PbF₂ or MoO₃ systems) is used as a solvent to dissolve the raw materials into a supersaturated solution at temperatures far below the material's melting point. Through extremely slow cooling or gradual solvent evaporation, the crystal precipitates and grows progressively on a seed crystal.

    ✨ Key Features

    🌡️ Near-Equilibrium Crystal Growth

    Crystals grow slowly in a low-temperature flux under conditions close to thermodynamic equilibrium, resulting in very low internal stress, excellent long-term stability, and reliable optical performance.

    💎 Minimal & Naturally Distributed Inclusions

    The growth process produces fewer, well-distributed inclusions, maintaining high transparency while preserving growth features similar to those found in natural gemstones.

    🔥 Ideal for High-Melting Materials

    Flux growth is particularly suitable for gemstones with high melting points or difficult-to-melt compositions, such as ruby and emerald, enabling crystal growth without compromising the crystal structure.

  • Hydrothermal Method

    ⚙️ Principle

    The hydrothermal method replicates the natural formation of minerals deep within the Earth's crust. Inside a sealed high-pressure autoclave, a supersaturated aqueous solution serves as the growth medium. A carefully controlled temperature gradient between the upper and lower chambers dissolves the raw materials in the hotter zone, transports them through convection, and deposits them onto a suspended seed crystal in the cooler zone, where crystal growth gradually occurs.

    ✨ Key Features

    🌍 Replicates Natural Geological Formation

    The hydrothermal process closely mimics the natural mineral-forming environment deep within the Earth's crust, using a supersaturated hydrothermal solution and a controlled temperature gradient to grow crystals.

    💎 Closest to Natural Internal Characteristics

    Hydrothermally grown gemstones exhibit inclusions, growth patterns, and trace element distributions that closely resemble those of natural gemstones.

    ⏳ Time Invested for Superior Quality

    Although the growth cycle typically takes several months, the process produces large crystals with low defect levels and natural-like internal features, making it one of the highest-quality growth methods available.