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Important Information and Limitation of the Use of GRS Gemresearch Swiss Lab Gemstone Reports

All GRS Gemresearch Swisslab Gemstone Reports will be printed on original paper (marked with GRS) and will bear an official signature. No corrections or alternations of any form shall be accepted on the Gemstone Reports, and all Gemstone Reports are laminated for protection. The Gemstone Reports, trademarks such as H (a), E (IM), or service marks of GRS Gemresearch Swisslab may not be reproduced in whole, or in part, without the prior written authorization of GRS Gemresearch Swisslab. A GRS report (after 2001) must have two GRS holograms otherwise the report is not valid. A GRS Gemresearch Swisslab Gemstone Report contains the identification of gemstones by photographic images, descriptions, dimensions, and weight and stating an opinion on their authenticity, treatment, country of origin, quality, and rarity. This GRS Report does not constitute a guarantee for or an appraisal of the object or gemstone described there in. The physical appearance of an object or gemstone may differ from its photographic image in the Gemstone Report. Determination of the authenticity and country of origin of a gemstone is based on the testing of chemical and physical properties and internal characteristics (e.g. inclusions and growth structures) using standard gemological instruments and modem analytical instruments including spectrometers. The conclusion on the country of origin, authenticity and treatment of gemstones is an opinion of the laboratory based on the direct comparison of the findings with those obtained from the analyses of reference materials, as well as those in published literature. The laboratory to the extent reasonably possible continuously updates this knowledge.

If not expressly disagreed by the client, the enhancement of rubies and sapphires are mentioned under comments as following:

  • No indication of thermal treatment: No gemological constraints (for instance no altered inclusions) are present which would indicate that a heat enhancement process was applied.
  • E Clarity and/or color are enhanced by heat. Minor residues of foreign solid materials may be present within fissures and/or cavities. The applied type of enhancement of the ruby or sapphire under consideration is, according to the opinion of GRS Gemresearch Swisslab, considered a permanent enhancement. Detailed analyses of the residues present in the gemstone includes the following grading: (Abundance of healed fissures not graded below)
  • H enhanced by heat (no residues present).
  • E or H (a) enhanced by heat, residue insignificant(indication of very small residues within fissures only).
  • E or H (b) enhanced by heat, minor residues are present (within fissuresonly).
  • H (c) is a transitional grade between H(b) and H(d).
  • H (d) enhanced by heat, significant residues present (within fissures and cavities).
  • H(Be) Enhanced by heat and light elements (e.g. Beryllium). Our research code E (IM) Clarity and/or color are enhanced by heat and diffusion of light elements such as Beryllium, inducing color zoning by internal migration of trace elements (incl. Beryllium) and defects, and formation of color centers. (Not corresponding to conventional surface diffusion treatment), Treatment is permanent. Recutting requires special care if thin orange rims are confined to the surface. See Internet publication http://www.gemresearch.ch/journal/index.htm.
    (LIBS = Laser Induced Breakdown Spectroscopy)
  • CE(O): Grading of Clarity Enhancement of Emeralds specified as None, Insignificant, Minor, Moderate, Significant. "Dried out features" indicates that materials describecd in category (O) are removed from cracks and that the gemstone's clarity can potentially be improved in a later stage by a treatment.
  • Other treatments will be specified on the front page as following:
    C.) Coating, D.) Dyeing, O.) Significant application of colored and/or colorless oil and/or epoxy-like resins and/or wax, R.) Irradiation, use of nuclear bombardment, U.) Surface diffusion, or any combination of the above.

The opinion on the Quality and Rarity of the gemstone under investigation is issued only upon request and represents an opinion based on the practical experience of the laboratory. The laboratory may refuse the issuance of a Gemstone Report at any time. Unless expressly agreed upon otherwise, the client agrees not to hold GRS Gemresearch Swisslab liable for the loss or damage of the gemstone resulting from risks that may occur during the transportation and delivery process, including robbery and theft; during the examination process, including color and clarity alteration, or other alteration of gem material, including removal of fissure fillings in the gem material; and while the gemstone is in the possession of GRS Gemresearch Swisslab, including theft negligence and natural acts of God. And, unless expressly agreed otherwise, GRS Gemresearch Swisslab cannot be held responsible for any consequences resulting from incomplete or erroneous data in this report; such as errors in dimension and weight measurements; typing errors; and errors in the determination of the authenticity, the country of origin, and errors in the declaration of treatments. Furthermore, the client and all other persons to whom the client may distribute, show, or transfer this Gemstone Report, for any use and for any purpose cannot hold GRS Gemresearch Swisslab liable.

These conditions form an integral part of the contract insofar that the parties to the contract do not expressly agree otherwise, the contract is subject to Swiss law, particularly with regard to regulations concerning the contract completion, fulfillment, and examination conditions. Any disputes in connection with the contract will be subject to the jurisdiction of the courts of Lucerne, Switzerland. The parties waive the jurisdiction guarantee of places of their private residence. Only the German version of this text is legally binding..


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