All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
Alibaba
Jewelry, Eyewear, Watches & Accessories
Jewelry Making
Jewelry Tools & Equipment
  • High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone
  • High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone
  • High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone
  • High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone
  • High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone
  • High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone
High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone

High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone

$0.10-$2.70/ Piece|10 Piece/Pieces(Min. Order)
View product details

High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Gold Purity Testing: A black magnetic stone designed for streak testing to determine the purity of gold, silver, and other precious metals by analyzing the color and texture of rubbed metal shavings.
  • Magnetic Adhesion: The ferrite-based material allows secure placement on metal surfaces (e.g., workbenches, refrigerators) for hands-free use during jewelry evaluation or small-scale metalwork.

Key features

  • 1. Material Technology

    • With a high-quality black stone material, ensure precise and durable gold purity testing. Unlike traditional touchstones that may wear quickly, this stone is designed for long-term use without compromising accuracy.

  • 2. Interactive Design

    • With a smooth, matte surface, achieve clear and consistent streak patterns for easy visual analysis of gold purity. The ergonomic rectangular shape with rounded corners allows for comfortable handling during testing.

  • 3. Performance Parameters

    • With compatibility for testing gold karats ranging from 9K to 24K, identify purity across a wide variety of jewelry pieces. This broad range outperforms limited-range testers, offering versatility for diverse applications.

  • 4. Scenario Solutions

    • Designed for both professional jewelers and home users, this stone provides reliable testing in commercial or personal settings. Its lightweight and compact design enables seamless use in workshops or on-the-go.

  • 5. Certification Standards

    • Manufactured in China to meet international quality standards, ensuring compliance with industry norms for jewelry testing tools.

Product details

High Quality Gold Testing Black Stone Jewelry Tools China Gold Test Stone

The High Quality Gold Testing Black Stone is a durable, rectangular ferrite-based magnetic tool designed for precise gold purity testing. Its smooth matte surface and rounded corners ensure ergonomic handling, while its magnetic properties securely hold jewelry items during testing. Made in China, this tool combines affordability with reliable performance for jewelry artisans, retailers, and hobbyists.

Technical specifications

FeatureSpecificationBenefit
MaterialFerrite (magnetic)Cost-effective, moderate magnetic strength
ShapeRectangular with rounded cornersErgonomic design for easy grip
Surface FinishSmooth matteMinimizes friction, ideal for scratch testing
ApplicationGold purity testing, jewelry assessmentAccurate measurement of metal composition
OriginChinaEnsures quality manufacturing standards

Customization guide

Customize the stone’s dimensions or shape using precision cutting tools (e.g., Dremel) to fit specialized testing needs. For example, adjust thickness for thinner edges to enhance precision in detailed work or create custom grooves for specific alloy analysis.

Get inspired

Use this magnetic testing stone in workshops to quickly verify gold purity by scratching samples against its surface. The magnetic property ensures small jewelry pieces stay in place during testing, reducing errors and saving time.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Magnetic StrengthStandard (Ferrite)+15% enhanced+30% premium
Thickness10mm12mmCustomizable (8–15mm)
Surface CoatingMatteAnti-scratch coatingUltra-smooth coating

Supplier's note

  1. Key Technical Breakthroughs:

    • Ferrite Material: Balances cost and magnetic strength for secure jewelry retention.
    • Rounded Corners: Reduces hand fatigue during prolonged testing.
    • Customizable Thickness: Adapts to precise scratch depth requirements.

  2. Version Selection Guide:

    • Base Model: Ideal for small-scale jewelers needing basic testing.
    • Advanced Model: Preferred by workshops requiring enhanced durability and scratch resistance.
    • Pro Model: Best for professional labs needing ultra-precise measurements and custom sizes.

With its magnetic properties, you can securely hold jewelry pieces during testing, minimizing handling errors. The Pro Model’s 30% stronger magnetism ensures stability even with delicate items. For bulk testing needs, the Advanced Model’s 12mm thickness offers superior longevity compared to standard 10mm stones.

Frequently asked questions

  • Which gold testing stone is best for small jewelry businesses?

  • How do I clean and maintain a gold testing black stone?

  • What’s the difference between black stone and acid testing for gold?

  • Can I customize the size or shape of the gold testing stone?

  • Is the black stone gold tester FDA-approved or certified?

  • How accurate is the black stone for testing gold purity?

  • What are the advantages of using a black stone over electronic testers?

  • Are there different grades of black stones for gold testing?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Gold Testing StoneOn-site purity testing in workshops/stores- Scratch Resistance: Industry (Mohs 6), Our Base (Mohs 7▲), Our Advanced (Mohs 8▲▲) (resists steel tools)
- Accuracy: Industry (9k–18k), Our Base (9k–24k▲), Our Advanced (5k–24k▲▲) (detects lower karats)		Cost-effective Base model, ultra-durable Advanced version (20,000+ tests▲▲)Requires user skill, may not detect plated items
Digital Metal DetectorLocating embedded metals in jewelry- Detection Depth: Industry (8cm), Our Base (10cm▲), Our Advanced (12cm▲▲) (finds deeper metals)
- Sensitivity: Industry (0.5g), Our Base (0.2g▲), Our Advanced (0.1g▲▲) (detects finer particles)		Easy-to-use, quick resultsCan’t determine purity, bulky design
Acid Testing KitHigh-karat verification in labs- Acid Types: Industry (2 types), Our Base (3 types▲), Our Advanced (5 types▲▲) (covers more metals)
- Test Volume: Industry (25 tests), Our Base (50 tests▲), Our Advanced (100 tests▲▲)		High accuracy for gold purityDamages jewelry, hazardous materials
Electronic Conductivity TesterNon-destructive metal type identification- Conductivity Range: Industry (1–80% IACS), Our Base (1–95%▲), Our Advanced (1–100%▲▲) (full range)
- Resolution: Industry (±1%), Our Base (±0.5%▲), Our Advanced (±0.1%▲▲) (high precision)		Non-destructive, portableLess accurate for complex alloys
XRF AnalyzerLab-grade elemental analysis- Detection Limit: Industry (0.5ppm), Our Base (0.3ppm▲), Our Advanced (0.1ppm▲▲) (trace detection)
- Elements Detected: Industry (10 elements), Our Base (20▲), Our Advanced (30▲▲) (covers 30+ metals)		Highly accurate, non-destructiveExpensive, bulky, slow calibration
Magnetic SeparatorSeparating ferrous/non-ferrous metals- Magnetic Strength: Industry (800 Gauss), Our Base (1000▲), Our Advanced (1500▲▲) (stronger pull)
- Capacity: Industry (3kg/hour), Our Base (5kg▲), Our Advanced (10kg▲▲) (doubles throughput)		Efficient separation, low costOnly works on ferrous metals

Related searches

shisha charcoal hookah cubes hookah charcoalsuper clear sheet acrylic sheet plastictractor kubota kit tractor iseki kitfloating foam materialixpe foam materialraw materialplastic floor broom household items broomsdashiki handbag african fabric clutch bagyellow corn maize for sale highindian handmade traditional embroidered handbag womendidactic microwave test bench educational microwavehorse winter turnout rug blanket outdoorknock down chest of drawers fairjapan made wheel loader kawasaki 70zhot sale wicker antique furniture andhandmade copper oven copper table ovenempty channel leather halterhorse halterhalter

The Product Description is generated by third-party, and Alibaba.com is not liable for any risks related to inaccuracies or the infringement of third-party rights.

The information in this Product Description may differ from the details on the product listing page on Alibaba.com. Additionally, the contents may not be updated in real-time with the product listing page on Alibaba.com, and there may be delays in reflecting the most updated information. The description on product listing page takes precedence. You shall not rely on this Product Description in making transaction decisions.

The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.