Standard Gemological Identification Report Wording;

Updated: July 2011

Comment(s) for Natural Sapphire 'Padparadscha.'

Sapphire is a variety of corundum the color is a subtle mixture of pinkish orange to orangey pink with pastel tones and low to medium saturations.

The Natural Sapphire (padparadscha) or 'padparadscha sapphire' can be applied to both unheated and heated; But shall not be applied in the following cases:

(1) If the stone has any color modifier other than pink or orange.
(2) If the stone has uneven color, distribution when viewed with unaided eye, table up +/- 30?.
(3) If the stone treated with foreign light element or/an external source.
(4) If the stone has been treated by irradiation, dyed, coated, or painted

Comment(s) for Natural Ruby and Sapphire 'Unheated'

Any corundum (Natural Ruby and Sapphire) that shows no indications of having undergone heat treatment shall be described as,

NOTE: The comment shall be described as; No indication of heating.

NOTE: In some certain heating conditions may not modify some internal characteristics, other features, if spectral data indicate heating has taken place, The comment shall be described as; Indication of heating.

Comment(s) for Natural Ruby and Sapphire 'Heated'

Any corundum (Natural Ruby or Natural Sapphire) that shows indications of having undergone heat treatment or e.g., Method;

Method: heating followed by controlled cooling (heated above 1600 C and then slowly cooled) and also heating and slow cooling {to improves or createsasterism (star)}

Method: heating is common use for removes purple or brownish color component; Also hides cracks and improves color

NOTE: In some certain heating conditions may not modify some internal characteristics, other features, if data indicate heating place, the comment shall be described as; Indication of heating.

Comment(s) for Corundum with residues from the heating process present in healed fissures and/or cavities.

NOTE: A fracture that has been healed by the synthesis of corundum or other materials during the heat treatment or crystal growth processes. This clause may include the presence of small filled cavities. the comment shall be described as; Indication of heating , minor/moderate/significant/ foreign substances are filled in fissures and cavities.

Comment(s) for Natural Ruby and Sapphire ' clarity enhancement '

Any corundum (Natural Ruby or Sapphire) that shows indications of having undergone heating with residue from the heating process present in healed fissures and/or cavities; shall be describe as a degree to which fissure "healing" has occurred, and the residue that remains within the healed fissures and cavities, this also shows indications of heat treatment and a degree of healing along which also contain residue from the heating process, (to modify the color or transparency of the stone and also adds weight); Flux (synthetic) assisted healing of a fracture during the heating process, or other materials during the heat treatment or crystal growth processes, indications of having undergone heat treatment and the presence of a vitreous residue in a cavity(ies), It is possible that during the clarity enhancement process in addition to fractures, cavities may become filled with the clarity enhancing substance being used, i.e., glass. The comment shall be described as; Indication of clarity enhancement lead glass found in fissures and cavities.

NOTE: The presence of materials within fractures that have occurred naturally are not within the context of this clause and need not to be declared.

Comment(s) for Natural Ruby and Sapphire ' beryllium treatment '

Any corundum (Natural Ruby or Natural Sapphire) that shows indications of having undergone heating (is commonly use in the trade) in natural beryllium in corundum treatment; beryllium is found mostly in the mineral beryl{ALBE 2 (Si 8 O18)}; chrysoberyl [Al 2 BeO4], phenakite [Be2SiO4], bromellite [BeO], and others.

NOTE: The comment shall be described as; Indication of heating with light elements. Treatment is permanent

Comment for Natural Ruby and Sapphire ' diffusion '

Any corundum (Natural Ruby or Sapphire) that shows indications of having undergone heating accompanied by the introduction/diffusion of a chemical element(s) (Heating in the presence of titanium oxide or other coloring agents) To improves or creates asterism, or diffuses color onto the surface of the stone, from an external source Or "surface diffusion". (avoid recutting)

NOTE: The comment shall be described as; Indication of heating with diffusion. (including the star)