Check the color for natural variation
Look for matrix or veining patterns
Inspect the surface for a waxy, matte, or slightly porous look
Test for uniformity; overly perfect color may indicate imitation
Examine the stone under magnification for bubbles or mold lines
Feel the weight; plastic imitations are often lighter
Rub gently with a soft cloth; dye transfer can indicate treated material
Check for hardness; real turquoise is relatively soft and can scratch
Look for signs of stabilization or resin filling
Ask for a reputable lab certificate
Buy from a trusted seller with clear origin information
Compare the stone to known real turquoise examples
Use a UV light to check for unusual fluorescence
Have a gemologist test it if authenticity matters