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SRI LANKA ASSAY OFFICE

The Sri Lankan Assay Office was established in Colombo in 1981 with the intention of providing consumer protection service for the public against fraud & of the trade against unfair competition.

As a measure to upgrade the jewellery quality in accordance with the international standards, rules & regulations were introduced by the National Gem and Jewellery Authority. (Act No.50 of 1993) where as the Assay laboratory was equipped with advanced & sophisticated analytical equipment for assaying of precious metals.

Analytical Methods Practiced.

  1. Cupellation method ( fire assay)
  2. Potentiometric titration
  3. Atomic absorption spectrophotometry
  4. X-ray fluorescence spectro metry

Precious methods standards

 

 

Gold (PPT)/Kt Silver (PPT) Platinum (PPT)
999 (24Kt.) 999 999
916 (22Kt.) 925 950
875 (21Kt.) 800 900
750 (18Kt.)   850
585 (14Kt.)    
417 (10Kt.)    
375 (9Kt.)    
333 ( 8Kt.)    





  1. For Registered Jewellers
    NOTICE -  New Charges with affect from 2nd of January 2012 for Testing and Hallmarking Jewellery Items  
      (A.)Issue of Assay Reports on Precious Metals/ Alloys/ Testing point      
                           
      Registered Jewellers   * Others
      Metal Type Charges NBT VAT Total   Metal Type Charges NBT VAT Total
      Gold 375.00 7.50 45.90 428.40   Gold 600.00 12.00 73.44 685.44
      Silver 225.00 4.50 27.54 257.04   Silver 350.00 7.00 42.84 399.84
      Platinum  800.00 16.00 97.92 913.92   Platinum  1200.00 24.00 146.88 1370.88
      Palladium 600.00 12.00 73.44 685.44   Palladium 800.00 16.00 97.92 913.92
      Other metals  300.00 6.00 36.72 342.72   Other metals  350.00 7.00 42.84 399.84
      Metalic elements (Tin,Sand, etc.) 1000.00 20.00 122.40 1142.40   Metalic elements (Tin,Sand, etc.) 1000.00 20.00 122.40 1142.40
                           
      (B) Issue of Assay Reports on Precious Metal Jewellery/ Coins      
                           
      Registered Jewellers   * Others
      Metal Type Charges NBT VAT                 Total   Metal Type Charges NBT VAT                 Total
      Gold 500.00 10.00 61.20 571.20   Gold 800.00 16.00 97.92 913.92
      Silver 250.00 5.00 30.00 285.60   Silver 350.00 7.00 42.84             399.84
      Platinum  900.00 18.00 110.16 1028.16   Platinum  1250.00 25.00 153.00 1428.00
                           
      (C) Issue of Assay Reports on Precious metal articels other than Jewellery    
                           
      Registered Jewellers   * Others
      Metal Type Charges NBT VAT                 Total   Metal Type Charges NBT VAT                 Total
      Gold 900.00 18.00 110.16 1028.16   Gold 900.00 18.00 110.16 1028.16
      Silver 500.00 10.00 61.20 571.20   Silver 700.00 14.00 85.68 799.68
      Platinum  1200.00 24.00 144.00 1344.00   Platinum  1800.00 36.00 220.32 2056.32
                           
      (D) Hallmarking Charges of Jewellery            
                           
      Marking Type Charges (per item)   *NBT = Charge x 2%      
      Charges NBT VAT                 Total   *VAT = (Charge+NBT)x 12%    
      Hand marking 65.00 1.30 7.96 74.26            
      Lazer marking 100.00 2.00 12.24 114.24     Manager Assaying  - NGJA

     

    N   




What is Hallmarking?
A scheme whereby precious metal articles are checked and certified for their precious metal content by a qualified and independent office before releasing for sale.

What is Assaying?
A quantitative procedure in which, a fusion is used to separate precious  metals from a known amount of sample.

What is Fineness?
The number of parts by weight of fine gold, silver and platinum in 1,000 parts by weight of alloy.  It may also be expressed in karats, as was the old practice.

What is a Hallmark?
A quality control mark placed on an article made of precious metal.  Sometimes it is called a hall, assay or standard mark.

What is Karat?
The term denotes a measure of purity; 24 karat is pure gold.  Thus, 14 karat gold is by weight 14/24 fine gold and the balance (10/24) is alloy metal.

What are Precious Metals?
Usually gold, silver, platinum and palladium are known as precious metals in the jewellery  industry.












Companies offering Hallmarked Jewellery for Sale
Colombo District

  Name Address T.P.No
1 Raja Jewellers No.175, Galle Road, Colombo 04. +94 11 2586949
2. Devi Gold Cast (Pvt) Ltd. No.131, Sea Street, Colombo 11. +94 11 2395001
3. Mallika Hemachandra Jewellers  (Pvt) Ltd.
No.73, Horton Place,Colombo 07. +94 11 2677537
4 Blue Diamond Jewellery Worldwide Katunayake +94 11 2253497
5 Ellawala Exports (Pvt) Ltd. 14, Carlwil Place, Colombo 03. +94 11 2575756
6 Dienge No.54, Kitulwatta Road, Colombo 08.  +94 45 2696992
7 Ceyital Jewellers (Pvt.) Ltd No.4/A, Bagatalle Raod, Colombo 03. +94
112501717
8 Aminra Collection No.182/A, Galle Raod, Mount Lavinia  +94 11 2722617
9 Sri Maithily Jewellers 153A, Sea Street, Colombo 11.  +94 11 2449400
10  A.M.A.Careem Jewellers
 Colombo Hilton, Colombo 01.
 +94 11 2336997
11  Bullion Exchange
 No.521, Galle Road, Colombo 04.
 +94 11 2581507
12  Sumith De Silva
 No.157, Kottawa Road, Honnantara, Piliyandala.
 +94 11 2700358
13  Swarna Mahal Jewellers (Pvt) Ltd.
 No.676, Galle Road, Colombo 03.
 +94 11 2590165
14  Ravi Jewellers
 115, Sea Street, Colombo 11
 +94 11 2436358
15 Wellawatta Nithya Kalyani Jewellery No.230, Galle Road, Colombo 06 +94 11 2363392
 16  A.M.S.International (Pvt) Ltd.
 No.621, Nawala Road, Rajagiriya.
 +94 11 2874575
17
 A.P.A.Jewellery
 No.108, A/2, Sri Kathiration Street, Colombo 13.
 +94 11 2916791
 18  Allawdeen Jewellers
 No.139, Sea Street, Colombo 11.
 +94 11 2382625
 19  Amaran Gems
 No.13/15, Old Kesbewa Road, Nugegoda.
 +94 11 2768185
 20  Arrujina Jewellery
 No.36, Galle Road, Dehiwala.
 +94 11 2716028
 21  Brilliant Gold House
 No.66, Galle Road, Dehiwala
 N/A
 22  Bullion Exchange
 No.521, Galle Road, Colombo 04
 +94 11 2581507
 23  Crown Jewellers
 No.76, Sea Street, Colombo 11
 +94 11 2337545
 24  D.D.Gems
 World Trade Center, Level 5, Shop No. 05, Colombo 01
 +94 11 2391160
 25  Deepthi Jewellery
 Shop No.21, SLGJE, No.310, Galle Road, Colombo 03
 +94 11 2390904
 26  Abdeen Jewellers
 No.28, Temple Lane, Duplication Road, Colombo 03
 +94 11 2593764
27 Dedigama Jewellers No.12, Dehiwela Road, Maharagama.  +94 11 2844302
28 Pathirana Gems & Jewellery  Y.M.B.A Building, Borella
 +94 11 4610930
 29  F & R Jewellers
 No.2-14,Majectic City, Colombo 04.
 +94 11 2584647
 30  Galary
 Majestic City, Colombo 03.
 +94 11 2598308
 31  Hemachandra & Brothers
 229, Galle Road, Colombo 03.
 +94 11 2325147
 32  J.A.De Silva Jewellers
 42D, Liberty Plaza, Colombo 03
 +94 11 2301290
 33  Jewel Qudsi
 46D, Dias Bldg, Galle Road, Colombo 03.
 +94 11 2336946
34 Lalitha Jewellery Mart Ltd. 105, Sea Street, Colombo 11  +94 11 2431993
35 M.A.Gunarathna No.22A, Tissa Mawatha, Dehiwela  +94 11 2731174
36 M.A.Piyasiri No.102/2, Lakshapathiya Road, Lakshapathiya, Moratuwa.  +94 11 2638213
37 M.M.Saheed No.39/G, Queensway Building, R.A.De Mel Mawatha, Colombo 03.  N/A
38 Madara Jewellers No.21, High Level Road, Maharagama.  +94 11 2844023
39 Majestic Jewellers No.2/17, Majestic City, Colombo 04  +94 11 2595959
40 N.C.J.Jewellers Pawn Brokers, No.150, Colombo 02.  N/A
41 Nalloor Jewels Park No.03, 32 Lane, Colombo 06.  +94 11 4527038
42 New Kalyani Jewellery Mart No.95, Sea Street, Colombo 11. +94 11 2422912
43 New Saranieya Jewels No.385, Galle Road, Colombo 06.  +94 11 2360611
44 Nithyakala jewellery No.17B, Stanley Tilakaratne Mawatha, Nugegoda.  +94 112823399
45 Nithyakala Jewellery No.09, High Level Road, Maharagama.  N/A
46 P.B.Gunadasa & Sons No.258, Galle Road, Colombo 03.  +94 11 2575435
47 P.R.A.N.Ruwin De Silva No.165/A, Sausiri, Nugegoda.  +94 11 2826266
48 Premadasa & Co. No.75/5, Ward Place, Colombo 07.  +94 11 2595353
49 Pushpa Jewellers No.32/C, Galle Road, Dehiwala +94 11 2719185
50 P & R Jewellery No.227, Hospital Road, Kalubowila, Dehiwala  N/A
51 Ranmuthu Jewellery No.6/A, Super Market, Piliyandala.  +94 11 2613103
52
Rathna Mahal Jewellers 
 No.09, High Level Road, Maharagama
 +94 11 2575756
 53  Ramani Jewellers
 No.130, Sea Street, Colombo 11
 +94 11 2436358
 54  Renelle (Pvt) Ltd.
 14, Carlwil Place, Colombo 03.
 N/A
55 Sathies Jewellers No.875/1, Bloemendhal Road, Colombo 15. +94 11 2524663
56 Silvador (Pvt) Ltd. No.9, Gower Street, Colombo 05. +94 11 2506938
57 Singapore Jewellers No.315, Galle Road, Colombo 06  +94 11 2363158
58 Solid Jewellers No.98, Galle Road, Moratuwa  +94 11 2646750
59 Sparkle Gems World Trade Center , Colombo 01  +94 11 5552690
60 T.Balasubramaniam Premier Pacific Pinnacle, D-11, Level 3, No.28, R.A.De Mel Mawatha, Colombo 04  +94 773876052
61 Udayaa Jewellers No.285/C, Galle Road, Colombo 06  +94 11 2554933
62 Unique Jewellers No.31, Lauris Road, Colombo 04  +94 11 2587180
63 Welcome Jewellery No.10/2, Dehiwala Road, Maharagama  N/A
64 Sareeta Jewellery No.42, Sea Street, Colombo 11 +94 11 2435361
65 N.H.N.Senerath No.61, Anandagama, Akarawita, Awissawella  +94 36 2254522/ 719 249933

Gampaha District

  Name Address   T.P.No
1 Ceylinco Colour Stones (Pvt) Ltd.                                                                  Liyanagemulla,                              Seeduwa                                               +94 11 2252083
2 I.B.Ariyawansa No.63C, Kandy Road, Kiribathgoda +94 11 2913322
3 Priyashantha Jewellers No.26/2, Kandy Road, Kiribathgoda N/A
4 Pushpa Jewellers No.67, Greens Road, Negombo +94 31 2239219
5 Shiny Jewellers No.266, Main Street, Negombo +94 60 2611110
6 Imaduwa Gold House No.222/7A, Sanasuma, Mahara Kadawatha N/A
7 Silanika Enterprises No.39/A, Kirillawala, Kadawatha +94 11 2971967
8 Ranmuthu Jewellers No.48/B, Negambo Road, Kandana N/A
9 Ranara Jewellers No.36/1, Raddoluwa, Kotugoda +94 11 2292478

Kaluthara District

  Name Address   T.P.No.
1 M.B.Gold House No.72/16, Moor Street, Kalutara N/A
2 M.B.Gold House No.67/1 7, Shopping Complex, Main Street, Kalutara N/A
3 Beverly Jewellers No.350/B, Galle Road, Panadura +94 38 4281333
4 Alankara S.K.R (Pvt) Ltd. 33, Modarawila Industrial Estate, Panadura +94 38 4281958
5 Fine Gems Neptune Hotel Beruwala +94 34 2276031
6 Fancy Gems Kalawila Watta, Kaluwamodera, Aluthgama N/A

Kandy District

  Name Address   T.P.No.
1 E.W.Balasooriya & Company (Pvt) Ltd., 3rd Floor, Commercial Bank Building, Kotugodalla Street, Kandy +94 81-2234369
2 Mangala Jewellery No.68, Yatinuwara Street, Kandy +94 81 2234064

Galle District

  Name Address   T.P.No.
1 Craft Gem & Jewellery No.14/1, Mosque Lane, Kande Wattha, Galle +94 91 223456
2 Feldspar Jewellers No.158, Galle Road, Werallana, Hikkaduwa +94 91 2277681
3 M.A.Gunaratna "Mahesh", Udumulla Maha-Induruwa N/A
4 M.Safa Ibrahim No.47, Church Street, Fort, Galle +94 72 231389

Rathnapura District

  Name Address   T.P.No
1 Ranmuthu Gold House No.205, Main Street, Ratnapura. +94 45 2231226
2 Ratnapura Gold House No.157, Main Street, Ratnapura  +94 45 2222634

Kurunegala District

  Name Address   T.P.No.
1 Ranmuthu Jewellers No.90, Parakumba Street, Kurunegala +94 37 2227222

 

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