The 3-Piece Gold Test Needle Set is a professional jewelry testing tool used to determine the karat purity of gold. Each needle contains a tip made from a known gold karat—10K, 14K, or 18K—allowing jewelers to compare the reaction of a sample against a known standard during acid testing.
When used with a testing stone and gold testing acids, these needles provide a reliable reference to help identify the approximate karat value of unknown gold jewelry.
This set is widely used by jewelers, pawn shops, refiners, and precious-metal buyers for quick and non-destructive gold purity testing.
Key Features
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3-piece gold testing needle set
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Includes 10K, 14K, and 18K reference needles
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Used with gold testing acids and testing stones
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Helps determine gold karat purity
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Durable construction for repeated professional use
Applications
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Identifying gold karat purity
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Testing scrap gold before buying
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Jewelry appraisal and repair
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Pawn shop and refinery testing
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Detecting gold-plated jewelry
How It Works
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Rub the jewelry on a testing stone to create a metal streak.
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Rub the gold testing needle of a known karat next to the streak.
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Apply the matching testing acid.
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Compare the reaction of the unknown metal to the needle sample.
If the sample reacts faster or disappears sooner than the needle mark, the gold is a lower karat. If it reacts slower, the gold may be higher karat.
Product Specifications
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Product Type: Gold testing needles
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Set Includes: 10K, 14K, 18K needles
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Use: Reference samples for acid testing
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Required Tools: Testing stone and gold testing acids
Hps1source is a Business-to-Business only distributor to those in the Jewelry Industry. All online orders are collected without payment and verified before being charged and shipped.
First time online customers may submit orders online without payment and a representative from our customer care team will reach out within 48 business hours.
Orders received by 3PM to often ship same day! We offer flat rate shipping on orders under $150 and free shipping on orders over $150.
*Orders too large to fit in an 8x8x8 box or weighing more than 5lbs do not quality for flat rate or free shipping.
You have 30-days from the time of receipt to return your item for a full refund. Customer is responsible for return shipping.
*Capacitors and Special-Order Items are not eligible for return.
Equipment and Tools come with original manufacturer warranty. As a distributor, Hps1source offers no warranty. Products made by Hps1source come with a 90-day warranty.