Go To Beryllium Treatment Disclosure Policy

Enhancement Disclosure Policy
Adjusted after September 2004

Clarity Enhanced by	Fissure Healing with or without Borax (Residues)						Fissure Healing with or without Borax and/or glass filling in fissures/cavities
Amount of Residues in Fissures	very minor			minor			moderate			prominent
GRS Residues Grading (*)	H(a)			H(b)			H(c)			H(d)
(*) If additional "FH" abundance grading (as shown below) of the healed features is not applied/requested than it will say on the report: Abundance of healing features not graded.
GRS Clarity Enhancement grading (CE)* Abundance of Healed Fissures (FH = Fissure Healing), independent of amount of residues	CE (FH): None			CE(FH): Minor			CE(FH): Moderate			CE(FH): Prominent

References:

Peretti, A.. (1993): Foreign substances in Mong Hsu rubies. JewelSiam, Vol.4, No. 5, p. 42.

Peretti, A. Schmetzer K., Bernhardt H.H. and Mouawad F. (1995): Rubies from Mong Hsu. Gems and Gemology, Vol 31, No.1, pp. 2-26. See Chapter Fracture Fillings Produced by Heat Treatment on pp.18-19.

Other laboratories

TE1

TE2

TE3

TE4

TE5

Enhancement Disclosure Policy
Up until September 2004

	Not Treated	RUBY AND SAPPHIRE TYPE OF TREATMENT
Disclosure policy	A	H	H (a) or E	H (b) or E	H (c)	H (d)
GRS GemResearch Swisslab	No indication of thermal treatment No indication of thermal enhancement	Enhanced by heat. Residue(s) not present.	Enhanced by heat. Residue(s) insignificant.	Enhanced by heat. Minor residue(s) present.	Enhanced by heat. Residues present in fissures and cavities.	Enhanced by heat. Significant residue(s) present in fissures and/or cavities.
Sample of an American Laboratory	None, no indications of enhacement by heat	Enhanced by heat(No residues present)	Enhanced by heat
			Minor amount of residue		Moderate/significant amount of residue	Treated Natural Ruby Glass is filling what would otherwise be small open cavities.
Gübelin Gem Lab *	No indication of thermal enhancement.	Indication of thermal enhancement. Minor/Moderate/Prominent solid residues present in fissure/cavities. (TE1 to TE6)
SSEF *	No indication of thermal enhancement.	Indication of thermal enhancement.	Indications of thermal enhancement and artificially glassy residues in fissures. Extend of enhancement: Minor/Moderate/Prominent			Treated
Federal Trade Commission (FTC) NY *		.Disclosure is not required as long as the treatment is permanent and requires no special handling or care			Disclosure is required
CIBJO *	No comment.	Comment or disclosure statement is optional		Disclosure statement is required stating the heat treatment and the presence of residue(s)		Treated
Treatment Stability		Enhancement permanent.			Under investigation.	Enhancement requires special handling or care.

* This data are compiled to the best knwoledge of GRS. The compilation in this summerized comparison is subjective. It is absolutely necessary that the laboratory referred to in this compilation is contacted for more detailed information directly, e.g. order their brochures or costumer information or use our provided link to contact them.