2. Hydrothermal synthesis of emerald. This emerald has good transparency, uniform color, bright green or bluish or yellowish green. Zooming in, we can see that many dots or peaks are distributed on one level. These are typical spike inclusions, and most of them are directional. Occasionally, you can see seed interlayers and triangular and hexagonal platinum sheets with different colors but gentle distribution. Growth lines and ribbons can also be seen in the emerald synthesized by hydrothermal method, which are mostly parallel to the seed crystal.
3. Synthetic beryl with emerald coating. Due to the combination of different substances, when it is put into water, it can be seen that the coated beryl becomes darker at the corners. In addition, interlaced network cracks can be seen at the junction of coating and beryl.