How We Screen Lab-Grown Alexandrite Before Further Verification
We recently performed an initial optical screening of a lab-grown alexandrite, a chrysoberyl variety known for its color-change phenomenon. The stone showed a refractive index of approximately 1.746 and clear birefringence. While this provides useful initial information, formal identification and composition verification require independent laboratory testing, which can be arranged upon request.
When evaluating lab-grown gemstones, we believe it is important to understand the material before offering it to customers.
Recently, we performed an initial screening on a lab-grown alexandrite, a variety of chrysoberyl known for its characteristic color-change phenomenon.
Using a refractometer, the stone showed a refractive index of approximately 1.746, together with clear birefringence. These optical characteristics provide useful indications consistent with chrysoberyl and give us an initial reference when evaluating the material.
However, this test is only an initial screening step. A refractometer cannot replace professional gemological identification or laboratory testing, nor can it independently confirm the complete composition of a gemstone.
For us, this process is about understanding what we are actually handling rather than relying solely on a supplier's description. Basic optical testing allows us to conduct an initial evaluation before deciding whether further verification is appropriate.
If a customer is interested in this lab-grown alexandrite and requires formal verification, we can arrange independent gemological laboratory testing and certification. The laboratory can further verify the gemstone's identity and composition and provide an independent report.
For B2B buyers, this additional verification can be particularly useful when evaluating a new material or considering stones for product development.
Our approach is simple:
Initial screening in-house. Independent laboratory verification when required.
This helps us make the material evaluation process more transparent for our customers and gives buyers the option to obtain formal documentation before shipment.