Search Suggestions
Adolf Peretti
Analyses
Analysis
Anong Kanpraphai
Archive
Armbruster
Auction
Award
Barcode Help
Beryllium-Treatment
Bibliography
Bieri
Bismuth-glass treatment
Board of Directors
Brazil
Burma
CE(O)
Cash-TV-Report
Chantaburi
Chemical Composition
Chrystal structure
Colombia
Comments
Contact
Contributions to Gemology
Cooper
Corundum Q&A
Crystal Structure
Cuprian-Elbaite
DVD
Demantoid
Demantoid
Director GRS
Discovery
ED-XRF
EMPA
ETH
Emerald
Enhancement
Eu Anomaly
Expedition
FTIR
Falster
Field work
Francesca Peretti
GRS (Lanka)
GRS (Thailand)
GRS Mobile
GRS Report
Gem-ID help
Geology
Grobety
Günther
H(Be)
H(a)
H(b)
H(c)
H(d)
Hametner
Hawthorne
Heat-Treatment
Help
Hotline
Important
Inclusion Album
Inclusions
Indication
Inventions
Johachidolite
Journals
Kaschmir
Kaschmir-Blue
Kashmir Blue
LA-ICP-MS Profile
LA-ICP-MS
LIBS
LIPS
Laurs
Lead
Lead-glass treatment
Location GRS
Madagascar
Magnificent Red
Magnificent
Major elements
Microscopy
Mineralogy
Minor elements
Miriam Peretti
Mogok
Movie
Mozambique
Mullis
NZZ-TV-Report
Namya
New Gemstone
New Mine
New Mineral Discovery
New Treatment
News
Nigeria
Order DVD
Order Journal
Order Publication
Order
Origin emeralds
Origin rubies
Origin sapphires
Origin spinel
Origin tourmalines
Origin
P.O. Box
Padparadscha
Padparadscha
Painite
Paraiba
Paraiba-type
Patents
Peretti
Pezzottaite
Phone
Pieon's Blood
Platinum Report
Price list
Professional Experience
Publications
Raman
Reports
Reusser
Rossman
Royal Blue
Ruby
SEM-EDS
Sample Reports
Sapphire
Simmons
Spectrum
Spinel Test
Spinel
Sri Lanka
Statistics
TV
Tadjikistan
Tanzania
Terms Limitations
Trace elements
Trade marks
Translation Report
Translation
Treatment
UV-VIS
University
Verify Report
Vietnam
Winza (Tanzania)
World Record
Zambia
Fig. 10 Blue to black color zoning was observed in some of the rubies
Copyright 2008 © GRS, Dr. A. Peretti
Copyright 2009 GRS
