The easiest way to identify lead crystal is by tapping it gently with a knife—if it makes a drawn-out chiming sound, chances are that it’s lead crystal. Regular glass tends to make a duller, briefer sound when struck.
What is difference between crystal and cut glass?
The main difference is that crystal contains anywhere from 2–30% minerals (lead or lead-free), making it possible to produce durable but thin glasses. It is also more transparent, brighter and thinner, making it a desirable choice for high-end glassware and decorations.
Can you tell real crystal?
Things You Should Know
Real natural crystals are cool to the touch, don’t scratch easily, contain imperfections, and are usually heavier than fakes. Heat-treated and synthetic crystals are not considered 100% fake and can still be used for healing, meditation, or manifesting.