A clear jewellery invoice should let you rebuild the total with a calculator. If you cannot, you do not yet understand what you are buying.
Start with net weight and purity. Net weight is the gold weight used for metal value. Gross weight may include stones or beads. Purity should match the hallmark (for example 916 for 22K).
Metal value is usually net weight × rate per gram for that purity. Compare that rate with today's city reference on The Gold Rate. A small retail premium is normal; a large unexplained gap is a warning sign.
Making charges may appear as a percentage of metal value or as ₹ per gram. Ask which method is used and whether festival discounts apply to making only. Wastage, if charged, should be explicit.
GST at 3% typically applies on the taxable value. Confirm whether the printed GST matches 3% of (metal + making + other taxable lines). Keep the tax invoice for exchanges and future resale conversations.
Old-gold exchange lines deserve special attention. Confirm the recovery rate, purity assumed on your scrap, and whether making on the new item is discounted. Get the exchange valuation on paper before they melt or reshape anything.
Before signing, photograph the draft bill. Recalculate metal value using the rate and weight shown. If numbers do not reconcile, pause. A trustworthy jeweller will explain patiently; pressure tactics are a signal to walk away.