CGC CGC Gemstone Valuation & Market Pricing

Question 1

Which of the four Cs has the greatest impact on a diamond's value when all other factors are equal?

Accepted Answer

Cut

Answer

Cut has the greatest impact on a diamond's brilliance and overall value, as a poor cut can diminish the beauty of an otherwise high-quality stone.

Question 2

What organization publishes the Rapaport Diamond Report used as a pricing benchmark in the U.S. diamond trade?

Accepted Answer

Rapaport Group

Answer

The Rapaport Group publishes the weekly Rapaport Diamond Report, which is the primary wholesale price benchmark used by diamond dealers and consultants.

Question 3

When appraising a colored gemstone for retail replacement value, which value type is typically used?

Accepted Answer

Replacement value

Answer

Retail replacement value represents the cost to replace the item with a comparable one at retail, which is the standard for insurance appraisals.

Question 4

Which ruby origin commands the highest premium in the U.S. market due to its historical prestige and color quality?

Accepted Answer

Burmese (Myanmar)

Answer

Burmese (Myanmar) rubies, especially those with 'pigeon's blood' color, command the highest premiums due to centuries of prestige and exceptional color saturation.

Question 5

What effect does a gemstone treatment disclosure have on its market value?

Accepted Answer

It generally decreases value compared to untreated stones

Answer

Disclosure of treatments generally decreases a gemstone's market value compared to a natural, untreated stone of equivalent appearance because untreated stones are rarer.

CGC - Certified Gemstone Consultant Practice Test

CGC - Certified Gemstone Consultant Practice Test

CGC CGC Gemstone Valuation & Market Pricing