Winter 2007

Gem News International

DIAMONDS

• Colored diamonds break $1 million per carat with record auction prices
• Namibian diamond mining by Namdeb

COLORED STONES AND ORGANIC MATERIALS

• Double jeopardy in amber
• Inclusions in andradite from Namibia
• Andradite from Baluchistan, Pakistan
• Two axinite species from Tanzania
• Baddeleyite from Mogok, Myanmar
• Chrysocolla chalcedony from Iran/Armenia area
• Yellow-green clinohumite and yellow chondrodite from Tanzania
• Transparent dumortierite and sapphirine from Tanzania
• Brazilian blue opal, with cristobalite and quartz
• Otolith pendant
• Goethite and hematite inclusions in quartz from Mina da Batalha, Brazil
• Sinhalite from Myanmar
• Field study of Cu-bearing tourmaline mines in Mozambique
• New Cu-bearing tourmaline from Nigeria

SYNTHETICS AND SIMULANTS

• New Tairus synthetic beryl simulating "Paraíba" tourmaline
• An unusual YAG with a "reverse" color change

CONFERENCE REPORTS

• Geological Society of America 2007
• Goldschmidt 2007
• The Madison Dialogue Ethical Jewelry Summit