Question 1

How is fine gold weight calculated?

Accepted Answer

Fine weight = gross weight × purity (tunch) ÷ 100. For example, 100 grams of 916 hallmark gold contains 100 × 91.6 ÷ 100 = 91.600 grams of fine gold.

Question 2

What is tunch in the sarafa market?

Accepted Answer

Tunch is the purity percentage of gold or silver used across Indian sarafa bazaars. A tunch of 91.60 means the metal is 91.6% pure — the same as 22-karat or hallmark 916 gold.

Question 3

Why is the gold rate quoted per 10 grams in India?

Accepted Answer

Indian bullion markets traditionally quote gold in rupees per 10 grams, the standard convention on MCX and in spot markets. Silver is quoted per kilogram.

Question 4

What is the difference between 999 and 995 gold?

Accepted Answer

999 (24K) is 99.9% pure and is the standard for coins and small bars. 995 is 99.5% pure and is the standard for larger bullion bars, including London Good Delivery bars.

Gold Purity & Fine Weight Calculator (Tunch) - Free Tool | JM Labs