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Diamond Carat Formula:
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Carat is the standard unit of weight for diamonds and other gemstones. One carat equals 200 milligrams. The carat weight significantly influences a diamond's value and appearance.
The calculator uses the diamond carat conversion formula:
Where:
Explanation: This formula provides an approximate carat weight based on the diamond's diameter, specifically calibrated for standard round brilliant cut diamonds.
Details: Carat weight is one of the "Four Cs" of diamond grading (along with cut, color, and clarity). It directly affects the diamond's size, rarity, and market value. Accurate carat estimation helps in diamond appraisal, purchasing decisions, and jewelry design.
Tips: Enter the diamond diameter in millimeters. For round brilliant cut diamonds, measure the widest point. For other diamond shapes, this calculation provides an approximate reference value.
Q1: How accurate is this conversion?
A: This formula provides a good approximation for round brilliant cut diamonds. Actual carat weight may vary based on diamond cut quality, depth percentage, and specific proportions.
Q2: Does this work for all diamond shapes?
A: This formula is optimized for round brilliant cuts. Other shapes (princess, oval, emerald, etc.) have different conversion factors due to varying cutting styles.
Q3: What is the relationship between carat and diamond size?
A: Carat weight correlates with physical size, but two diamonds of the same carat weight can appear different sizes depending on their cut proportions and shape.
Q4: Why use 6.5 as the conversion factor?
A: The 6.5 factor is derived from the average proportions of well-cut round brilliant diamonds, providing a reliable conversion standard in the jewelry industry.
Q5: How does carat affect diamond price?
A: Diamond prices increase significantly at certain carat milestones (0.5, 1.0, 1.5, 2.0 carats) due to rarity and market demand for these popular sizes.