1. What is the Marquise Diamond Size Calculator?

The Marquise Diamond Size Calculator estimates the carat weight of a marquise-cut diamond based on its dimensions and a specific adjustment factor. This calculation helps jewelers and buyers estimate the weight without direct measurement.

2. How Does the Calculator Work?

The calculator uses the marquise diamond formula:

Where:

• \( Length \) — Length of the diamond in millimeters
• \( Width \) — Width of the diamond in millimeters
• \( Depth \) — Depth of the diamond in millimeters
• \( Factor \) — Adjustment factor specific to marquise cut diamonds

Explanation: The formula calculates the approximate carat weight by multiplying the three dimensions with an adjustment factor and dividing by 200.

3. Importance of Carat Calculation

Details: Accurate carat estimation is crucial for diamond valuation, pricing, and comparison. It helps in assessing the diamond's size and value without physical weighing.

4. Using the Calculator

Tips: Enter length, width, and depth in millimeters, and provide the appropriate adjustment factor. All values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical factor value for marquise diamonds?
A: The factor typically ranges between 0.005 and 0.007, with 0.006 being a common average value.

Q2: How accurate is this calculation?
A: This provides an estimate. Actual carat weight may vary based on the diamond's specific proportions and cut quality.

Q3: Can this formula be used for other diamond shapes?
A: No, this formula is specifically designed for marquise-cut diamonds. Other shapes have different calculation formulas.

Q4: Why is the factor adjustment necessary?
A: The factor accounts for the unique shape and density variations in marquise-cut diamonds that affect weight calculation.

Q5: Should this replace professional weighing?
A: This is an estimation tool. For precise valuation, professional weighing and certification are recommended.