A carat (ct), a widely recognized unit for measuring precious items, weighs exactly 200 milligrams (mg). This precise measurement is fundamental in the gemstone and pearl industries.
Understanding the Carat Unit
The term "carat" (often abbreviated as "ct") is specifically a unit of mass used to quantify the weight of gemstones like diamonds, emeralds, and sapphires, as well as pearls. It is crucial for standardized trade and valuation in the jewelry world.
Exact Weight Equivalents of a Carat
To provide a clearer perspective, one carat can be expressed in various units of mass:
| Unit of Mass | Equivalent Value |
|---|---|
| Milligrams (mg) | 200 mg |
| Ounces (oz) | 0.00705 oz |
| Troy Ounces (ozt) | 0.00643 ozt |
These precise conversions ensure consistency and accuracy when measuring and trading valuable materials globally.
The Metric Carat: A Global Standard
The current definition of the carat, often referred to as the metric carat, was officially adopted in 1907. This standardization occurred at the Fourth General Conference on Weights and Measures. Its rapid adoption in numerous countries worldwide soon after highlights the international need for a uniform system to weigh gemstones, replacing older, less consistent local measures. This unified standard simplifies international trade and provides clarity for consumers and professionals alike.
