What property is most commonly used to distinguish diamonds from simulants?
Refractive index is a critical factor in determining whether a stone is a real diamond or a simulant.
What is the primary scale used to measure gemstone hardness?
The Mohs scale is used to rank minerals based on their ability to scratch softer materials.
What tool is typically used to examine internal inclusions in gems?
A 10x loupe is the standard tool used by gemologists to inspect internal and external features of gemstones.
Which gemstone is typically treated with heat to enhance its color?
Heat treatment is a common practice for sapphires to improve their appearance.
What does 'cut' refer to in the 4Cs of diamond grading?
Cut refers to how well a diamond has been shaped and faceted, impacting its brilliance.
Which term refers to a gemstone’s resistance to scratching?
Hardness indicates how well a gemstone resists being scratched.
Loading Questions...
Which instrument is used to measure a gem’s refractive index?
A refractometer helps determine the optical properties of a gemstone.
Which clarity characteristic can lower a diamond's value the most?
Large or dark inclusions near the table can significantly affect the value of a diamond.
What is pleochroism in gemology?
Pleochroism is the appearance of different colors when a gemstone is viewed from different angles.