Step 1: Convert Market Rate per 10g to per gram:
Rate per Gram = Market Rate of 10g ÷ 10
Step 2: Calculate Purity Factor:
Gold Purity Factor = Selected Purity ÷ 24
Silver Purity Factor = Selected Purity ÷ 1000
Step 3: Calculate Base Price:
Base Price = Weight × Rate per Gram × Purity Factor
Step 4: Calculate GST:
GST Amount = Base Price × (GST % ÷ 100)
Step 5: Calculate Final Price:
Final Price (Incl. GST) = Base Price + GST Amount
Step 6 (Optional): Difference from MRP:
Difference = Jewelry MRP - Final Price
Difference % = (Difference ÷ Final Price) × 100