SURFACE TEXTURES OF ROUGH DIAMONDS
SURFACE TEXTURES OF ROUGH DIAMONDS
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DIAMOND GRADING
DIAMOND GRADING
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GEM IDENTIFICATION

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GEMOLOGY LABORATORY SERVICES – GEM TESTING, GEM IDENTIFICATION CERTIFICATES

  • Service is provided in respect of cut and polished stones, loose or mounted, tumbled stones, beads, figurines, carvings and rough crystals.
  • Non-destructive testing methods only are employed.
  • Distinction is made between natural and synthetic stones.
  • If a treatment is detected, the same is indicated under “Comments”.
  • Reports of geographic origin are provided in respect of emerald, ruby and sapphire, on specific request, and are charged separately.
  • Gem Identification reports are provided in the following formats:
    • Full report – indicating all parameters measured, characteristics observed and an image of the stone.
    • Card report – indicating all vital characteristics and an image of the ston

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CARVINGS AND FIGURINES

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Figurines with religious themes, animals, and other artistic forms made from different gemstones.
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DIAMOND GRADING

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Diamond Grading – Gemological Laboratory Services

  • Service is provided in respect of cut and polished diamonds only.
  • Minimum size acceptable for issuing a full report is 10 cents (0.1 carat).Grading is carried out only under controlled conditions,
  • Grading is carried out only under controlled conditions, keeping in view GIA standards.
  • Full grading report includes clarity, color, cut, fluorescence, and a plot diagram showing important clarity characteristics.
  • Summary grading report contains same information as the full grading report but does not include any plot diagram.
  • In case of doubt about the stone being a natural diamond, diamond grading report will not be issued and a fixed charge will be taken  from the client.
  • In case a diamond has been enhanced by HPHT treatment but the same is not detected in the laboratory during routineexamination, ACGS will not be responsible for the same.
  • Fancy colored diamonds are graded for clarity, cut, and color; color grade is assigned as per parameters laid down by the  GIA.
  • Methodology – Each and every Diamond is certified after a thorough analysis and study by a qualified and experienced  diamond grader. Each diamond undergoes rigorous and meticulous study and analysis before preparation of the report.
  • Credibility – The laboratory is known for its credibility, impartiality and independence.
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DIAMONDS

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Diamonds are available in all grades of color and clarity. We offer stones with XXX and VG cut  grades. All diamonds are pre-examined at ACGS before being cleared for sale. We also make available GIA certified solitaires. ACGS Diamond Grading Report is provided with all other solitaires at a nominal fee.
  • Stars – all sieve sizes available
  • Melee – sizes up to 10 cents, cutting styles include fancy shapes
  • Pointers – All sizes upto 40 cents
  • Solitaires – up to 2.0 carat and above in any of the prevalent cutting styles
  • Fancy colors – fancy yellow and champagne colored stones in different sizes pear, princess, marquise, emerald
  • Other sizes – up to 30 cents, cutting styles include RBC, pear, princess, marquise, emerald
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PEARLS

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Cultured pearls are available in all marketable sizes and shapes, as loose pearls, drilled pearls, and as strings
  • Freshwater Pearls (China)-different shades including white, cream, onion –  skin, pink, mauve
  • Akoya Pearls
  • Mabe Pearls
  • South Sea Pearls
  • Tahitian Pearls
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PROCEDURE TO SUBMIT STONES/JEWELRY

  • All gemstones, diamonds, or other gem materials have to be submitted at the collection window of ACGS at its main office in Chandigarh.
  • ACGS (Asiatic Center of Gemological Services) will not pickup specimens for testing from the office/shop of the submitter and will not deliver the specimen back to the submitter at their office/shop.
  • An acknowledgement receipt / challan, carrying a serial number, will be issued for the specimen received, indicating the weight, general appearance, and description of the same. The likely date and time of delivery of the report are also reflected on the same. The challan will carry on it contact name and telephone number of the submitter.
  • “Express Service” is provided against enhanced fee only.
  • The specimen, along with the report, will be returned to the submitter, at the stipulated time against payment due to ACGS, on production of the acknowledgement receipt / challan at its office.
  • While submitting pieces of jewelry for grading / identification, the weight of the stone / stones studded in the piece need to be informed by the submitter. • All submitters should go through the terms and conditions given on the reverse side of the test / grading report.
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