The color of dyed stone appears very vibrant and eye-catching, but it often looks artificial, especially in terms of shine. The dye tends to settle on the surface rather than being evenly absorbed into the material.
You can often spot the level of dye penetration by examining the edge or fracture of the stone. In some cases, a sharp tool can reveal the contrast between the dyed surface and the natural core.
Dyed stones are typically made from lower-quality raw materials with high porosity and water absorption. This makes them more susceptible to damage over time. One way to test this is by tapping the stone—if it sounds dull or muffled, it may be dyed.
Natural stone usually produces a clear, ringing sound when tapped, while dyed stone may feel more hollow or less dense.
Some stones are coated with oil to enhance their shine. However, this treatment can leave oily stains on the back or sides of the stone, which can be an indicator of artificial enhancement.
Coated stones may look shiny at first, but the surface layer is often weak and prone to scratching. Even minor abrasions can reveal the underlying, less attractive surface beneath.
Another common technique is wax coating to improve the appearance. If you use a match or lighter to melt the wax, the surface will lose its shine, revealing the original color underneath. Wiping it with toilet paper might also show if the color rubs off, indicating that the stone has been dyed.
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