1. What is the MM to Carat Calculator?

The MM to Carat Calculator estimates the carat weight of a gemstone based on its dimensions in millimeters. This is particularly useful in jewelry for estimating diamond and gemstone weights when only physical measurements are available.

2. How Does the Calculator Work?

The calculator uses the carat calculation formula:

Where:

• \( L \) — Length of the gemstone (mm)
• \( W \) — Width of the gemstone (mm)
• \( D \) — Depth of the gemstone (mm)
• \( 190 \) — Conversion factor for diamond cut

Explanation: This formula provides an approximate carat weight based on the volume of the gemstone and a standard conversion factor optimized for diamond cuts.

3. Importance of Carat Calculation

Details: Accurate carat estimation is crucial for jewelry valuation, gemstone pricing, and ensuring proper setting and mounting in jewelry designs.

4. Using the Calculator

Tips: Enter length, width, and depth in millimeters. All values must be positive numbers. Use precise measurements for accurate carat estimation.

5. Frequently Asked Questions (FAQ)

Q1: Why is 190 used as the conversion factor?
A: The factor 190 is optimized for standard diamond cuts and provides a good approximation for most gemstones in jewelry applications.

Q2: How accurate is this calculation?
A: This provides an approximate weight. Actual carat weight may vary based on gemstone density, cut precision, and specific gravity.

Q3: Can this be used for all gemstones?
A: While designed for diamonds, it works reasonably well for most gemstones with similar density. For significantly different densities, specific gravity adjustments may be needed.

Q4: What are typical carat sizes for jewelry?
A: Common sizes range from 0.25 carats for small accent stones to 5+ carats for center stones in engagement rings.

Q5: How does cut affect carat weight?
A: Different cuts (round, princess, oval, etc.) have different depth percentages, which can affect the relationship between dimensions and carat weight.