Observe the overall shape
Check the color and surface texture
Look for natural spiral patterns
Identify visible chakra marks
Note the number of openings or pores
Examine the presence of fossil-like impressions
Compare symmetry and contour
Check for natural holes, lines, or grooves
Look for signs of river-worn polishing
Determine the size and weight
Inspect for embedded mineral variations
Match the markings with known Shaligram types
Verify authenticity through an expert or trusted source