Payment Method & Policy

Secure payment options, transparent diagnostic fee structures, and billing safety standards at Koustav Gemological Laboratory.

1. Accepted Payment Channels

We accept multiple secure electronic and direct payment methods at our Krishnagar diagnostic facility:

UPI & QR Payments

Google Pay, PhonePe, Paytm, BHIM

NEFT / RTGS / IMPS

Direct Laboratory Bank Account Transfer

Credit & Debit Cards

Visa, MasterCard, RuPay at billing desk

Cash at Counter

Direct payment at Krishnagar laboratory

2. Invoicing & Official Receipts

An official GST-compliant tax invoice and serialized payment receipt are issued for every gemstone diagnostic test, diamond grading report, and plastic PVC certificate card generated.

3. Transaction Security

We maintain 256-bit encrypted data standards for all online transactions. We do not store credit card numbers, CVVs, or bank login credentials on our servers.