A 'step-cut' diamond (such as an Asscher) is being appraised. Compared to a round brilliant of equal weight and quality, how is it typically valued?
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A
At a premium because step cuts are rarer and more labor-intensive
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B
At a discount because step cuts generally have lower light return than rounds
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C
Identically, since only the 4Cs determine price
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D
At a premium only if it has an AGS ideal-cut grade