Oval Diamond Size Calculator

Oval Diamond Formula:

\[ Carat = \frac{Length \times Width \times Depth \times Factor}{200} \]

Length (mm):

Width (mm):

Depth (mm):

Factor (adjustment):

Estimated Carat Weight:

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1. What is the Oval Diamond Size Formula?

The oval diamond size formula calculates the approximate carat weight of an oval-shaped diamond based on its physical dimensions and a specific adjustment factor. This formula is widely used in the gemology industry for estimating diamond weight without direct measurement on a scale.

2. How Does the Calculator Work?

The calculator uses the oval diamond formula:

\[ Carat = \frac{Length \times Width \times Depth \times Factor}{200} \]

Where:

\( Length \) — The longest measurement of the diamond (mm)
\( Width \) — The measurement perpendicular to length (mm)
\( Depth \) — The height or thickness of the diamond (mm)
\( Factor \) — An adjustment factor specific to oval cuts (typically 0.0062)

Explanation: This formula accounts for the unique proportions of oval-cut diamonds, providing a reliable estimate of carat weight based on physical dimensions.

3. Importance of Accurate Diamond Measurement

Details: Accurate diamond measurement is crucial for valuation, certification, and proper setting in jewelry. The carat weight significantly impacts a diamond's value and pricing in the market.

4. Using the Calculator

Tips: Enter all measurements in millimeters. Use precise measurements for accurate results. The standard factor for oval diamonds is typically 0.0062, but this may vary slightly based on specific cut proportions.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: The formula provides a close approximation but may vary by ±2-3% from actual weight due to variations in cut proportions and density.

Q2: Why is a factor needed in the calculation?
A: The factor accounts for the specific density and cut proportions of oval diamonds, converting the volume measurement to an approximate carat weight.

Q3: Can this formula be used for other diamond shapes?
A: No, this formula is specific to oval-cut diamonds. Other shapes have different formulas and factors.

Q4: What's the typical factor value for oval diamonds?
A: The standard factor is approximately 0.0062, but it can range from 0.0060 to 0.0065 depending on the specific cut quality and proportions.

Q5: How should I measure my diamond for best results?
A: Use a precision caliper to measure length, width, and depth in millimeters. Take multiple measurements and use the average for most accurate results.