Oshinic JewelsJewelry Tools & Calculators
Welcome to the Oshinic Jewels interactive toolkit. We have developed these free utilities to help you make informed, confident decisions when buying, selling, or maintaining fine jewelry. Whether you need to convert an international ring size, estimate the wholesale price of a diamond, or figure out the scrap value of an old gold chain, our tools provide instant, data-driven answers.
How to Use These Tools
1. Select a Category: Scroll down to find tools organized by Size & Fit, Gemstone Properties, Value Calculators, and Authentication & Care.
2. Enter Your Data: Input your specific measurements, select your desired gemstone, or enter current market prices into the fields provided.
3. Calculate: Click the calculate button to receive an instant, mathematically accurate estimate or recommendation. Please note that while our value estimators use standard industry formulas, final retail or appraisal values can vary based on craftsmanship and market conditions.
💍 Size & Fit
Ring Size Converter
Enter finger circumference (mm) for international sizing.
Bracelet Size Calculator
Enter your wrist circumference (cm).
Interactive Necklace Visualizer
Slide to see where the necklace naturally falls and get styling tips.
💎 Gemstone Tools
Birthstone Finder
Select your birth month.
Gemstone Hardness Checker
Check the Mohs hardness to see if a stone is safe for daily wear.
Diamond Price Estimator
Rough wholesale estimate based on current market averages.
💰 Value Calculators
Gold Price Calculator
Jewelry Value Calculator
Estimate the scrap value of a piece (metal + center stone).
🔍 Authentication & ✨ Care
Real vs Fake Jewelry Checker
Check the boxes that apply to your item:
Jewelry Care Generator
Get instant cleaning instructions.