PRECIOUS METAL CALIBRATION
Gold Tunch & Net Purity Calculator
Calculate fine gold grams, karat ratings, alloy melt loss, and market realization using certified laboratory benchmarks.
Rajendra Touch Lab Calibration
Precious Metal Touch & Purity Calculator
g
Total scale weight of jewelry, coin, or bar.%
Purity out of 100 parts (e.g. 91.6 for 22K).Quick Slide Purity:91.60%
₹/ 10g
Precision: 3 Decimal Points
Touch Lab Assay Result
Assay Breakdown
Net Fine Gold (Fine Au) Weight
9.160 grams
Karat Equivalent: 21.98 Karat
Gross Scale Weight:10.000 g
Lab Touch Purity:91.60%
Alloy / Base Metal Weight:0.840 g
Rate Applied per Gram:₹7950.00
Estimated Pure Value:₹72,822
What is Gold Touch?
In traditional Indian goldsmithing and modern assaying, “Touch” is the percentage of pure gold out of 100 parts. For instance, 91.6 touch signifies 91.6% pure gold (22 Karat), while 75.0 touch represents 75.0% pure gold (18 Karat).
Formula for Fine Gold
Fine Gold weight is calculated as:Gross Weight × (Touch ÷ 100)
This determines the exact pure gold recoverable upon melting or refined evaluation.
Laboratory Verification
Calculators give estimates based on assumed touch. For bank audits, jewel purchases, or loan pledges, visit Rajendra Tunch in Kalyan for certified non-destructive XRF or Fire Assay verification.
Indian Standard Precious Metal Purity Reference
| Standard Fineness | Karat | Gold Touch % | Alloy Elements | Typical Application |
|---|---|---|---|---|
| 999 | 24K | 99.90% | None (Trace impurities) | Investment Bars & Bullion Coins |
| 958 | 23K | 95.80% | Silver / Copper (4.2%) | Premium Plain Gold Jewelry |
| 916 | 22K | 91.60% | Copper / Silver / Zinc (8.4%) | Standard Indian Traditional Jewellery |
| 833 | 20K | 83.30% | Copper / Silver (16.7%) | Antique Temple Jewelry |
| 750 | 18K | 75.00% | Silver / Nickel / Zinc (25.0%) | Diamond & Gemstone Studded Jewelry |
| 585 | 14K | 58.50% | Alloy Matrix (41.5%) | High Durability Daily Modern Wear |