Mon - Sat: 10:00 AM - 8:30 PM (Sun by Appointment)
Rajendra Touch Lab Precious Metals Gold Assaying Banner
Ahilyabai Chowk, Kalyan (W) • BIS Assaying

PRECISION ASSAYS FOR
UNRAVELING THE TRUTH

At Rajendra Touch Lab, we specialize in providing accurate and reliable assay and gold testing services. Services that empower individuals, businesses, and jewellers to uncover the true composition and certified value of precious metals.

Rajendra Touch Lab Certified Metallurgist at Work
Precision in Every Test

Two Decades of Assaying Excellence

Trusted by prominent jewellers across Kalyan, Ulhasnagar & Mumbai markets.

100,000+Assays Completed
About Rajendra Touch Lab (RTL)

Pioneering Metallurgical Purity & Scientific Assaying in Thane District

Founded on the principles of immaculate precision and unwavering transparency, Rajendra Touch Lab (RTL) stands as the premier destination for gold and silver assaying, BIS hallmarking facilitation, and non-destructive computerized tunch verification.

Whether you are a retail customer verifying grandmother’s heirloom gold before seeking a bank loan, or a wholesale jewellery merchant seeking certified fire assay cupellation for hallmarking compliance, our experienced metallurgists and German XRF instruments provide impartial, court-admissible purity certification.

Instant Computer Touch (XRF) under 10 minutes
ISO/IEC 17025 Standard Fire Assay Cupellation
Assistance with BIS 6-Digit HUID Hallmarking
Certified Valuations for Bank & NBFC Gold Loans
Precision Micro-Laser Soldering & Laser Marking
Central Facility: Prakash Tower, Shop 11/A, Opp. Raja Hotel, Ahilyabai Chowk, Kalyan (W)
Central Kalyan Laboratory
Prakash Tower, Shop No. 11/A, Opp. Raja Hotel, Ahilyabai Chowk
+91 9892356103
Our Specializations

Certified Laboratory Testing Services

Explore our comprehensive range of 12 precious metals testing, assaying, hallmarking, and laser craftsmanship solutions.

Gold Assay
Assaying & Purity Testing

Gold Assay

Traditional fire assay and karat evaluation for 18k, 22k, and 24k gold with micro-precision balance.

45 Mins99.98% Certified
Silver Assay
Assaying & Purity Testing

Silver Assay

Precision titration and purity certification for silver jewellery, utensils, and bullion bars.

30 Mins99.95% Certified
Computer Touch (XRF)
XRF Non-Destructive Testing

Computer Touch (XRF)

High-precision non-destructive XRF spectrometry test delivering immediate purity percentage.

5 - 10 Mins99.90% Instant
Hallmarking Center
BIS Hallmarking Assistance

Hallmarking Center

BIS certified assistance, laser hallmarking verification, and regulatory 6-digit HUID documentation.

Same DayBIS Standard
Metal Testing
Metallurgical Testing

Metal Testing

Multi-element composition testing for platinum, palladium, copper, and precious alloys.

20 MinsMulti-channel Spectrum
Gold Loan Evaluation
Financial Valuation & Audit

Gold Loan Evaluation

Third-party independent valuation and purity report for bank and NBFC gold loan applications.

15 MinsBank Approved Appraiser
NPA Gold Loan
Financial Valuation & Audit

NPA Gold Loan

Re-verification and valuation for distressed or auction-bound gold loan portfolios.

1 - 2 HoursForensic Audit Grade
Money On Gold
Financial Valuation & Audit

Money On Gold

Immediate purity assessment and liquidity assistance calculations with live MCX rate peg.

10 MinsLive MCX Market Peg
Gold Loan Problem
Advisory & Dispute Resolution

Gold Loan Problem

Advisory and audit solutions for purity disputes and stone deductions with financial institutions.

2 HoursLegal Assayer Affidavit
Laser Soldering
Laser Technology & Craftsmanship

Laser Soldering

Advanced micro-laser precision soldering without torch fire damage or gemstone removal.

15 Mins0.2mm Micro-weld
Laser Marking
Laser Technology & Craftsmanship

Laser Marking

Computerized micro-engraving, logo marking, and hallmark imprinting on precious metals.

10 Mins0.01mm Vector Precision
Jewellery Repairing
Laser Technology & Craftsmanship

Jewellery Repairing

Ring resizing, claw retipping, chain soldering, and ultrasonic cleaning while you wait.

30 MinsMaster Bench Goldsmith
Why Trust NSTL

The Rajendra Touch Lab Advantage

Why jewellery retailers, bullion merchants, and banking valuers rely on our certified laboratory.

Zero Damage Guarantee

100% Non-Destructive Testing

Our high-precision German XRF spectrometers analyze metal composition without scratching, acid scratching, or damaging your delicate jewellery.

99.98% Accuracy

High Precision XRF & Fire Assaying

Double-verified testing protocols combining high-speed spectrometry with classical fire assay titration adhering to ISO 17025 benchmarks.

BIS HUID Compliant

BIS Hallmarking Standards

Assistance with 6-digit Hallmark Unique Identification (HUID) certification, laser inscription, and compliance for Kalyan jewellers.

Under 10 Mins

Instant Computerized Tunch Reports

Receive full elemental spectrum certificates with QR code verification in under 10 minutes, complete with net gold weight breakdowns.

Got Questions?

Frequently Asked Questions

Clear answers on our testing methodologies, turnaround speeds, accuracy standards, and hallmarking protocols.

Our modern German XRF spectrometers offer an accuracy rate of 99.90% for surface and cross-sectional non-destructive analysis without scratching the item. For bulk melt bullion bars and hallmarking lots, our traditional cupellation Fire Assay provides 99.98% metallurgical precision adhering to ISO/IEC 17025 standards.
Get in Touch

Send an Assay Inquiry or Schedule a Visit

Have questions about bullion purity, BIS registration, or gold loan audits? Send us a message and our lead metallurgist will get in touch.

RTL Logo

RAJENDRA TOUCH LAB

PRECISION IN EVERY TEST

We welcome walk-in customers and jewellery partners at our central Kalyan facility. Standard Computer Touch tests are performed on a first-come, first-served basis in 10 minutes.

Laboratory Address:Prakash Tower, Shop No. 11/A,
Opp. Raja Hotel, Ahilyabai Chowk,
Kalyan (W), Maharashtra - 421301
In-Charge Contact:Ganesh Deshmukh
Regional Hub:

Ahilyabai Chowk, Kalyan (West) • Landmark: Opp. Raja Hotel

Online Assay Inquiry

Fill out your details below and our testing metallurgist will get in touch.