Selecting the Correct Gemstone for Evaluation

Choosing the appropriate gemstone from our list is crucial for obtaining an accurate valuation. Proper identification is paramount, as even subtle differences can significantly impact a gem's worth. Here’s a guide to help you make an informed choice:

Key Considerations for Gemstone Identification:

1. Accurate Identification is Essential: The first step is to ensure you’ve correctly identified your gem. Misidentification can lead to inaccurate pricing and assessments.
2. Physical and Optical Properties: Consider the gem's observable physical and optical characteristics, including its color, luster, transparency, refractive index, and specific gravity. These properties are fundamental to differentiating between various gemstones.
3. Provenance and History (If Known): If possible, gathering information about a gemstone's origin and history can sometimes provide valuable insights, though this is often challenging.
4. Treatment Detection: It is vital to assess whether the gem has undergone any treatments or enhancements. These can dramatically affect its value.
5. Certification from Reputable Labs: Only certificates issued by recognized and reputable gemmological laboratories provide reliable verification of a gem's identity, properties, and any treatments.
6. Caution with On-Site Certificates: Be aware that gemmological certificates issued at mass-market locations or tourist spots (e.g., some areas in Sri Lanka) should be approached with caution. They often do not guarantee the accuracy of the information provided.
7. Understanding Certificate Language: Familiarize yourself with the meaning of each sign, symbol, or term found on a gemmological certificate or jewelry tag. This ensures you fully understand what you are buying or evaluating.
8. Deciphering Treatment Codes: Common codes on certificates often indicate treatments. For instance, “H” typically denotes a heated stone, which is a common enhancement for many gemstones. Other common indications include "B" for bleaching, “C” for coating, “O” for oiling, “R” for irradiation and “F” for filling/fracture-filling.
9. Common Enhancement Methods: Be aware of the common gemstone enhancement methods, which include heat treatment (H), irradiation (R), oiling (O), dyeing, fracture filling (F) and coating (C). Each type of treatment can have a different impact on the price per carat of the gemstone.

By carefully considering these factors, you'll be better equipped to accurately select the correct gemstone from the list in our app and obtain a more precise valuation. Remember to always consult with a qualified gemmologist for any complex or unclear situations.