It is a certification of purity of gold articles in accordance with Indian Standard specifications. It has been acting as a safeguard to purchasers of gold and gold articles for centuries in various countries.
After evaluating and testing the gold article of jewellers, these marks are allotted. Hallmarked jewellery authenticate that the metal used in jewellery conforms to the national and international standard of fineness and purity.
Hallmark consists of five components i.e.
- BIS Mark,
- Purity Grade
- Jewelers Identification Mark
- Hallmarking Centre's mark, Jeweller's mark and
- Year of marking denoted by a code letter and decided by BIS (e.g. code letter 'A' was approved by BIS for the year 2000, 'B' being used for the year 2001 and 'C' for 2002)
Marking is done either using a laser marking machine or punches. Bureau of Indian Standards (BIS) hallmark, a mark of conformity widely accepted by the consumer, bestows additional confidence to the consumer on the purity of gold jewelry.
Bureau of Indian Standards is the country's apex standard body, involved in the development of technical standards (popularly known as Indian Standards), product quality and management system certifications & customer affairs in all matters concerning standardization, certification, and quality. Bureau of Indian Standards (BIS) certified jewelers can get their jewelry hallmarked from any of the BIS-recognized Assaying and Hallmarking Centre.
The main objective of assaying and hallmarking is to protect a consumer against victimization of irregular gold quality. Besides consumer satisfaction, hallmarking helps to create export competitiveness of gold jewelry industry thus providing a strong impetus for gold jewelry exports.
Hallmarking Centre Setup
1. Gold Testing Machine
- Fast: Ultrafast detection system for quick results.
- Accurate: This system is based on x-ray radiation technology with modern user-friendly software which ensure accurate measurement.
- Non-destructive: The analysis performed non-contact and non-destructive in about 1 minute.
- Calibration: Pre-calibrated for Gold and other precious metals.
- Ease: This Machine is very user-friendly and easy to operate. It doesn’t require a special person to operate. Simply position the piece of interest with the aid of a video microscope and start the measurement. The analysis is performed non-contact and non-destructive in less than 35 sec. to 3 minutes.
- Compact Eco is based on Gas filled prop counter for Measuring most common allots including gold for Jewellery industry.
- Compact Eco Si-Pin is based on high resolution silicon detector which is ultimate for alloys analyzing for jeweler industry including gold & silver, even one step ahead for accuracy & repeatability compare to Gas filled pro counter.
- Coating Thickness: Standard module available for measuring coating thickness. Especially useful for plating & electronic industry.
Mode |
Compact Eco (Si -Pin) |
X-ray Tube |
Long Life, High-Efficiency tungsten target, air-cooled |
High Voltage |
50Kv / (1.2 mA) programmable |
Detector |
High-resolution Silicon Pin detector in conjunction with digital signal processing. Pin Diode, 25 mm2 with Digital Pulse Processor |
Measurement Time |
35 sec. to 180 sec. |
Collimator |
Single Collimator 0.5mm |
Inside Chamber |
H 35 X W 40 X D 60 cm |
Sample Stage |
Manual scissors-type Z-stage, Optional motorized Z-stage with Autofocus facility |
Power Supply |
230VAC, 50/60Hz, 120W / 100W |
Dimension |
400 × 600 × 350 mm (W x D x H) |
Weight |
40 kg |
Advantages:
Compact eco is an affordable precious metal analyzer with high precision.
Compact Eco Pin with the usage of a high-resolution silicon pin detector in conjunction digital signal processing achieves best detection limits and highest precision. Based on an about four times better resolution (in comparison with conventional technique) the element separation is much better. Furthermore, lowest detection limits are Achieved because of better signal to noise ratio.
Safety: A major task of the operating software is to assure the complete safety in the operation of the X-ray system. This includes the control of all the various safety interlocks and functions needed for the German Government approval and license as a fully fail-safe closed beam instruments X-MasteR is the user-friendly operating software for the modern suit of X-ray systems. This program used most modern software tools available for windows® operating platforms. The main task of the operating software is the control of all system parameters such as high voltage settings, X-ray tube current, display of collimators and filters as well as the collection and manipulation of the measurement data.
Features of Gold Testing Machine:
Technology Used:
2. Fiber Laser Machine
Able to mark all metal materials and some non-metal materials. Complete enclosed laser module design with the optical fiber transmission pump light source, air cooling systems, which offers better protection for the laser devices greatly reducing the failure rate of laser device.Ergonomically designed. Can be placed on desktop, taking up a small working space. Low power consumption of 1kw.WINDOWS based marking software. Able to read COREL DRAW, AUTOCAD, PHOTOSHOP and other commonly used graphic files, such as AL, PLT, DXF, BMP, JPEG. Support for auto-coding, serial number, batch number, date, bar code and two-dimensional codes.Able to mark 360° circular objects such as finger rings, bracelets and other cylindrical objects. (Optional Accessories required) Laser source life span up to 50,000 hours.
3. Micro Balance Machine
Model |
CFM – 20 |
Laser Source |
Pulsed Fiber Laser |
Laser Source Lifetime About |
~ 50,000 hours |
Maximum Laser Power |
20 W |
Wavelength (nm) (Min-Typ- Max) |
1064nm |
Beam Quality M2 (Typ-Max) |
M2 < 1.6 |
Pulse Repetition Rate (Min- Max) |
20Hz - 100 Khz |
Working Area (mm) |
70 x 70 |
Optional Area (mm) |
100 x 100 / 200 x 200 |
Marking Speed |
<15000 mm/s |
Min Width |
0.03 mm |
Min Character |
0.3 mm |
Orientation Precision |
0.002 mm |
Cooling Style |
Air Cooling |
Power Consumption |
800 W |
Power |
AC 220±10% / 50HZ / 5A |
Dimension ( mm) |
600 x 460 x 530 |
Gross Weight |
45 Kg |
- Easy to read Large Backlight GRAPHICAL LCD Display with A.E.P(Advanced Eye Protection)
- Standard RS 232 C InterfaceBuilt in Internal Calibration with function like E1 Standard weight.
- Initial Calibration.
- Auto calibration according to change in ambient temperature.
- User selected time calibration.
- Various weighing units like %, filling, Check weighing, statistic.Conforms to GLP/GMP & ISO 9001 standard.Improved Repeatability for better results.
4. Weight Machine
- Easy to read Large Backlight GRAPHICAL LCD Display with A.E.P(Advanced Eye Protection)
- Dye Cast Aluminum design for long term stability and accurate results.
- Standard RS 232 C Interface.
- Various weighing units like gm, mg, ct, oz, dwt, mom, GN.
- Conforms to GLP/GMP & ISO 9001 standard.
- Hanger for below balance weighing.
- Spacious draft shield interior.
- Improved Repeatability for better results.
Model |
CY 64 |
Capacity |
60gm |
Readability |
0.1 mg |
Pan Size |
85 mm dia |