What is the first step in evaluating an opal?

Determining the type of opal is the fundamental first step in evaluating this gemstone because the type informs many aspects of its characteristics and value. Opals can be classified into categories such as black opal, white opal, boulder opal, and crystal opal, each possessing unique attributes, color play, and market values. Understanding the type helps in assessing the overall quality, potential pricing, and appropriate care for the stone.

Once the type is established, other factors such as cut, carat weight, and clarity come into play for further evaluation. However, without knowing the type, these subsequent attributes cannot be fully understood or appreciated. Therefore, starting with identifying the type provides essential context for the entire evaluation process.