Carat Weight
The unit of weight for diamonds and gemstones, where 1 carat equals 0.2 grams.
Definition
Carat weight is the standard unit of measurement for diamonds and gemstones, where one carat equals 200 milligrams (0.2 grams). The word derives from the carob seed, which ancient gem traders used as a counterweight. Carat weight is often abbreviated as 'ct' for a single stone or 'ctw' (carat total weight) for multiple stones. Diamond prices increase exponentially at popular carat milestones (0.50, 1.00, 1.50, 2.00).
Why It Matters for Ring Design
Carat weight is typically the first specification clients ask about and has the largest impact on price. Educating clients that a well-cut 0.90-carat diamond can look identical to a 1.00-carat but cost significantly less is a powerful value conversation that builds trust.
Related Terms
Turn Knowledge Into Sales
Use your expertise to help clients build their dream ring with Ring Vision AI.
Start Free Trial