图1。一批维尔纳叶法工艺生长的半晶柱，演示了这种晶体生长的各种颜色。

Figure 1. A selection of half boules grown by the Verneuil process, illustrating many of the colors these crystals are grown in.

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维尔纳叶法合成刚玉是目前市场上最常见的，因此，弧形生长纹和气泡是宝石学家进行鉴定时重要而有力的关键依据。

Verneuil synthetic corundum is by far the most common in the market. Thus it is vital that gemologists are familiar with the key identifying features - curved growth lines and gas bubbles.

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