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as follows

Shape: string shape

Color: blue, white, brown and yellow

Density: 2.95g/cm3

Refractive index: 1.6 1 (spot measurement)

Optical properties: heterogeneous polymers

Absorption spectrum: featureless

Magnification inspection: fiber interwoven structure, fine texture.

Appraisal result: Hetian jade

Remarks: The reason of color is uncertain.

The evaluation institution has the national inspection qualification, and the conclusions issued are authoritative and effective.

There is no doubt that it is genuine. Please feel free to wear it.

I hope the answer can help you.