Peridot Guide

Peridot Overview
General introduction and key concepts of peridot
Peridot Types
Common types and categories of peridot
Peridot Best Practices
Recommended approaches and guidelines for peridot
Peridot Common Mistakes
Frequent errors to avoid with peridot
Peridot Quick Reference
Essential values and measurements for peridot
Peridot Comparison
Compare different options and variations of peridot
Peridot Standards
Industry standards and specifications for peridot
Peridot Safety
Safety considerations and precautions for peridot
Peridot Tools Required
Equipment and tools needed for peridot
Peridot FAQ
Frequently asked questions about peridot
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About Peridot

What this tool does

Jewelry tools convert between carats, grams, and millimeters, determine ring sizes across international standards, calculate gold purity (karat to fineness), evaluate the 4Cs of diamonds, and estimate metal density for casting.

Why use this tool

Jewelers and buyers need precise conversions. Knowing the exact gram weight of a 1.5-carat diamond, or the gold content in 18K vs. 14K, informs pricing and design decisions. These tools provide instant, accurate answers.

How it works

Carat-to-gram conversion uses the fixed ratio 1 ct = 0.2 g. Ring-size conversion maps circumference in mm to lettered or numbered systems (US, UK, EU, JP). Gold karat to fineness divides by 24 (18K = 75% gold).

Pro tip

Ring size varies with temperature and time of day. For the most accurate measurement, size the finger in the afternoon when hands are warmest and slightly swollen, not first thing in the morning.

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