Straight answers about method selection, packaging, depth, training and why complementary tests matter.
Which tester is best for me?
Jewellery: start with CaratScreenPen V2. Coins and small bars: GoldScreenSensor plus weight and dimensions. Small irregular objects: GoldScreenPen. Larger unpackaged bars: BarScreenSensor. Selected sealed gold objects up to 250 g: MagneticScreenScale.
Can one positive result prove authenticity?
No. Each instrument measures one physical property within a defined depth and geometry. A professional decision combines independent observations and escalates inconsistent or high-value objects.
Who operates GoldTester.org?
GoldTester.org is operated by CENGIZ, S.A. de C.V., trading as Deseo Fine Jewelry. The company is based in Mexico. Orders are dispatched worldwide from the Netherlands, subject to product and destination restrictions. Payments are processed through Stripe.