S062-Bi-terminated apatite crystal inclusion in a blue sapphire from Sri Lanka - Darkfield illumination.
S062-Bi-terminated apatite crystal in...
S060-Fissure filled with boehmite crystals inclusions (epigenetic) in a blue sapphire unheated from Myanmar (fromerly Burma) - Darkfield illumination.
S060-Fissure filled with boehmite cry...
S059-Fissure filled with boehmite crystals inclusions (epigenetic) in a blue sapphire unheated from Myanmar (fromerly Burma) - Darkfield illumination.
S059-Fissure filled with boehmite cry...
S061-Polysynthetic twinnings with interfaces light interference in an unheated purple sapphire form Ilakaka, Madagascar - crossed polarizing filters, immersion.
S061-Polysynthetic twinnings with int...
S058-Artificially healed fissures in a quench-cracked flame fusion (Verneuil) synthetic blue sapphire
S058-Artificially healed fissures in ...
S057-Artificially healed fissures and typical bubbles and blue dots in a quench-cracked flame fusion (Verneuil) synthetic blue sapphire
S057-Artificially healed fissures and...
S056-Melted inclusion (Prob. U-Thorianite) surrounded by an empty (light interferences) circular fracture in a heated blue sapphire from Sri Lanka-TE
S056-Melted inclusion (Prob. U-Thoria...
S040-Calcite crystal in an unheated yellow sapphire from Mozambique belt. NTE
S040-Calcite crystal in an unheated y...
S039-Synthetic hercynite-type spinel crystals in a fracture. Heated yellow sapphire from Sri Lanka. TE
S039-Synthetic hercynite-type spinel ...
S038-Healed fracture and minute residues in a yellow natural sapphire beryllium diffused.
S038-Healed fracture and minute resid...
S037-Blue residues and gas in bubbles in green synthetic quench-cracked  flame fusion sapphire.
S037-Blue residues and gas in bubbles...
S036-Healed fracture in a green synthetic quench-cracked flame fusion sapphire with blue residues in bubbles.
S036-Healed fracture in a green synth...
S035-Healed fracture in a green synthetic quench-cracked flame fusion sapphire.
S035-Healed fracture in a green synth...
S034-Healed fracture in a green synthetic quench-cracked flame fusion sapphire.
S034-Healed fracture in a green synth...
S033-Negative crystal in an unheated Padparadscha sapphire from Sri Lanka. NTE
S033-Negative crystal in an unheated ...
S032-Twin of U-Thorianite crystals with expansion cracks in an unheated blue sapphire from Sri Lanka. NTE
S032-Twin of U-Thorianite crystals wi...
S031-Partially melted U-Thorianite crystal surrounded by a partially healed circular fracture in a blue sapphire from Sri Lanka. TE
S031-Partially melted U-Thorianite cr...
S030-Partially melted U-Thorianite crystal surrounded by a partially healed fractures in a blue sapphire from Sri Lanka. TE
S030-Partially melted U-Thorianite cr...
S029-Partially melted pyrochlore crystal surrounded by a partially healed fissure containing melted residues in a blue sapphire from Cambodia. TE1
S029-Partially melted pyrochlore crys...
S028-Hematite crystal in a heated blue sapphire. TE
S028-Hematite crystal in a heated blu...
S026-Acicular and flat wedge-shaped crystals of rutile in a blue sapphire from Sri Lanka. NTE
S026-Acicular and flat wedge-shaped c...
S025-Feldspar crystals in a color-change sapphire from Sri Lanka. NTE
S025-Feldspar crystals in a color-cha...
S024-Bone-shape and toothpick-shape cavities in a Padparadscha sapphire from Sri Lanka, found near a prehistorical barbecue site. NTE
S024-Bone-shape and toothpick-shape c...
S023-Healed fracture exhibiting geometrical pattern in a blue sapphire from Madagascar. NTE
S023-Healed fracture exhibiting geome...
S022-U-Thorianite cubic crystal surrounded by expansion cracks in a blue sapphire from Myanmar (formerly Burma). NTE
S022-U-Thorianite cubic crystal surro...
S021-Pyrochlore automorphous crystal and comet tail in a blue sapphire.NTE
S021-Pyrochlore automorphous crystal ...
S020-Phlogopite (mica) crystal in a blue sapphire from Myanmar (formerly Burma). NTE
S020-Phlogopite (mica) crystal in a b...
S019-Gibbsite elongated and curved crystals in a fracture and along the junction of r/r\' rhomboedron planes in a blue sapphire from Myanmar (formerly Burma). NTE
S019-Gibbsite elongated and curved cr...
S018-Rutile crystals and unidentified particles in a blue sapphire from Madagascar. NTE
S018-Rutile crystals and unidentified...
S017-Rutile crystals in a blue sapphire from Myanmar (formerly Burma). NTE
S017-Rutile crystals in a blue sapphi...
S016-Flat wedge-shaped crystals of rutile observed in transmitted light in a blue sapphire from Mogok, Myanmar (formerly Burma). NTE
S016-Flat wedge-shaped crystals of ru...
S015-Vitreous inclusion in a magmatic blue sapphire from Cambodia. NTE
S015-Vitreous inclusion in a magmatic...
S014-Minute healed fractures (similar to magmatic equatorial films) in a heated blue sapphire from Myanmar (formerly Burma). TE
S014-Minute healed fractures (similar...
S013-Melted unidentified inclusions alignment with healed discoidal cracks (initially induced by expansion of the inclusions from the heat). TE
S013-Melted unidentified inclusions a...
S012-Geometrically distributed groups of voidites (not rutiles!) in a blue sapphire from Andranondombo, Madagascar, NTE
S012-Geometrically distributed groups...
S011-Automorphous feldspar crystal in a blue sapphire from Madagascar. NTE
S011-Automorphous feldspar crystal in...
S010-Alignments of flatened groups of voidites (not rutiles!) in a blue sapphire from Andranondombo, Madagascar, NTE
S010-Alignments of flatened groups of...
S009-Negative crystal in a blue sapphire  from Soomjon, Kashmir, India. Collected  \"in situ\" by a GGTL Laboratories member in 1991.
S009-Negative crystal in a blue sapph...
S008-Zircon with healed fracture in a blue sapphire from Soomjon, Kashmir, India, NTE
S008-Zircon with healed fracture in a...
S006-Tourmaline (dravite), zircon and U-Thorianite in a blue sapphire from Soomjon, Kashmir, India, NTE. Collected  \"in situ\" by a GGTL Laboratories member in 1991.
S006-Tourmaline (dravite), zircon and...
S005-Multiphase inclusion in a blue sapphire from Sri Lanka - Liquid and gazeous CO2, diaspore, NTE
S005-Multiphase inclusion in a blue s...
S004-Aligment of multiphase inclusions in a blue sapphire from Sri Lanka - Liquid and gazeous CO2, graphite, diaspore, NTE
S004-Aligment of multiphase inclusion...
S003-Classical multiphase inclusion in a blue sapphire from Sri Lanka - Liquid and gazeous CO2, graphite, diaspore, NTE
S003-Classical multiphase inclusion i...
S002-Heated (> 1\'500°C) blue sapphire - Altered zircon inclusion with synthetic ZrO2 (zirconium oxyde) and SiO2 (glass) in the fissure
S002-Heated (> 1'500°C) blue sapphire...
S001-Rough beryllium diffused yellow sapphire from Umba Valley, Tanzania - along optical axis, crossed polarizers, immersion
S001-Rough beryllium diffused yellow ...
S042-Unidentified sub-surface cristallites synthetized during a heat treatment at high temperature (> ≈ 1600°C) in a natural blue sapphire from undeterminable origin.
S042-Unidentified sub-surface cristal...
S041-Unidentified sub-surface cristallites synthetized during a heat treatment at high temperature (> ≈ 1600°C) in a natural blue sapphire from undeterminable origin.
S041-Unidentified sub-surface cristal...
S045-Apparently curved alignment in a natural unheated blue sapphire from Sri Lanka.
S045-Apparently curved alignment in a...
S007-Pargasite crystal in Kashmir sapphire.
S007-Pargasite crystal in Kashmir sap...
S044-Light interference in geometrical films of primary fluids in a partially healed fracture - Sapphire, Sri Lanka
S044-Light interference in geometrica...