State Board Nail Tech Practice Exam 2025 – Comprehensive Prep Resource

The commonly referred term "diamond file" is associated with a metal file, which typically uses a coating of diamond particles on its surface to create a rough texture. This type of file is particularly effective for smoothening and shaping nails because the diamond particles provide a durable, abrasive surface that can easily file down the nail without causing damage. Metal files are favored for their longevity and ability to provide a precise finish, especially when compared to other types of files, which may wear down more quickly or not offer the same level of control.

In contrast, glass files are known for their gentle filing action, which is less abrasive, making them suitable for reducing the risk of nail splitting. Emery boards, made of layers of cardboard and abrasive material, are great for quick filing but do not provide the same precision as a diamond-coated metal file. Silicone files are designed for buffing and smoothing rather than filing, hence they are not categorized as "files" in this specific context. Understanding the characteristics and uses of these different implements clarifies why the metal file is identified as the diamond file.