GEM IDENTIFICATION
GEM IDENTIFICATION
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DIAMOND SORTING
DIAMOND SORTING
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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.
Description

Description

NOTE:
  • Service tax applicable on the above charges at the rate 10.30%.
  • Delivery within Two working days.
  • Payment Terms: PAYMENT AGAINST DELIVERY
  • Goods will be returned only on producing the CHALLAN issued by ACGS.
  • Above prices are subject to change without any prior notice.

RELATED OFFERINGS

BEAD JEWELRY

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Drilled beads and strings are offered in following stones:
  • Ruby
  • Emerald
  • Sapphire
  • Tourmaline ( mixed colors)
  • Lapis lazuli
  • Turquoise
  • Rock crystal
  • Rose Quartz, Smoky Quartz, Citrine, Amethyst, Onyx, Bloodstone, Jasper
  • Moonstone
  • Hematite
  • Coral
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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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COLORED STONES

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COLORED STONES (OTHER THAN PEARLS) – natural, untreated
  • Amber
  • Andalusite
  • Apatite
  • Aquamarine
  • Charoite
  • Chrysoberyl
  • Chrysoberyl (Alexandrite)
  • Chrysoberyl Cat’s Eye
  • Coral
  • Diopside, Star Diopside
  • Emerald
  • Enstatite
  • Fluorite
  • Garnet – Alamndine-Pyrope
  • Garnet – Spessartine
  • Garnet – Rhodolite
  • Garnet – Tsavorite
  • Hematite
  • Iolite
  • Jade (Jadeite)
  • Jade ( Nephrite)
  • Kyanite
  • Labradorite & Spectrolite
  • Lapis Lazuli
  • Moonstone
  • Malachite
  • Peridot
  • Quartz – Rock crystal
  • Quartz – Amethyst, Citrine
  • Ametrine, Rose, Smoky
  • Rhodochrosite
  • Rhodonite
  • Ruby, Star Ruby
  • Sapphire – yellow, blue, green, pink: Star Sapphire
  • Scapolite
  • Serpentine
  • Sillimanite
  • Sphene
  • Spinel – red, blue
  • Spodumene – Hiddenite
  • Spodumene – Kunzite
  • Sugilite
  • Tanzanite
  • Topaz – colorless, blue, yellow
  • Tourmaline
  • Turquoise
  • Zircon
  • Zoisite – green
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JEWELRY CERTIFICATION

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  • 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 stone.
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PEARL TESTING

  • Service is provided for natural, cultured, and imitation pearls in loose as well as mounted form, wherever testing conditions permit.
  • Testing is carried out only under controlled laboratory conditions, in accordance with international gemological standards.
  • Pearl testing includes determination of pearl type (natural / cultured / imitation), mollusk origin where possible, structure, surface characteristics, luster, shape, color, and size.
  • Advanced gemological instruments and non-destructive testing techniques are used to examine nacre thickness, growth structures, surface features, and internal characteristics.
  • The full pearl testing report includes identification, measurements, weight, color description, luster grade, surface quality, shape, and remarks on treatment, if any.
  • A summary report contains essential identification details but may not include detailed structural observations.
  • In case of doubt regarding the authenticity or origin of the pearl, a conclusive identification may not be issued, and a fixed laboratory examination charge will be applicable.
  • If any treatment or enhancement is present but remains undetected during routine laboratory examination, the laboratory shall not be held responsible for the same.
  • Dyed, treated, or composite pearls are clearly disclosed where detected during examination.
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