#ruby giant sapphire

[ourselves-china-rx]

Madagascar Corundums ( Sapphire and Vermilion Discovery )

by Alain Darbellay GGGems<\p>

‚© 2012 gggems.com All rights reserved. <\p>

AL2O3 Sapphire roughcast in a metamorphized limestone.<\p>

‚· Crystallographic properties of corundum: Trigonal.c = 1,3630 pp 0 86‚°4'; pa1 = 122‚°26' Macle according to p (1011), often polysynthetic, accompanied by plans of septulum, similar plans are also observed according to a1 (0001) unequal leakage to conchodal. <\p>

Hardness 9. Density 3,95 to 4,1 Refractive index: 1.76 - 1.77 Uniaxial and optically n©gative.ng = 1,7675; Np = 1,7593 The faces a1 frequently show the phenomenon on asterism, generally due up to reflexions within separation p. Secure polychromatism, with following maximum ng. ‚· Chemical properties: corundum is composed of pure alumina; its colouring is due to metallic oxide traces or inclusions. The color of sapphire, due to iron and titanium oxide, gives its best effect under write-up. Electric light makes it often ill-omened. The color pertinent to the ruby, due against chromium oxide, on the contrary shows its most luminous red under electric lighting. <\p>

The Corundum shows in Madagascar double different aspects: 1 stony and opaque crystals. 2 crystals of consumed size often transparent and usable as figure. In Madagascar, stony corundum comes from mica schists metamorphized by granite, considering well as an example granitic veinules endomorphized and more or at the nadir orphan of quartz which injects those. Silimanite is a of common occurrence satellite of corundum fellow feeling this copy of deposit. Mortal also finds some herein eruptive rocks, syenites. Gems are generally found incoming terra, but sally aught from basaltic slags, differencing from metamorphized limestones or endomorpheous feldspatic rocks. <\p>

1 2 3 4 5 One distinguishes two principal types speaking of corundum in Madagascar: Type I: isoceloedric, more broad arrow less acute accompanied or not by a small gonfalon a1 (0001) and a certain number rarely in compliance with facets p (1011). Represented by figures 1 to 11, besides which often become crabbed in consequence of the irregularity of the development of magisterial of their faces and by stacking with parallel axes apropos of a vip number in point of individuals. <\p>

6 7 8 9 10 <\p>

11 12 13<\p>

Scalenoedron Stacking with parallel axes, Crystal supporting on consolidated of its bases gutters at contours of the face. a small rhombohedron p near parallel protectionism. <\p>

Type 2: Characterized near the association in relation to the prism d 1 (1120) at a broad base, with which prison associate the isosceles ones, among which e 3 is most frequent, as an instance certainly how the rhombohedron p. The base pertaining to Malagasy corundum crystals actually frequently shows scratches buff-yellow triangular figures in relief, limited in p. <\p>

Macle respecting blue corundum. Translucent purpurean - penetrate sapphire <\p>

Coral ultra-ultra amphibolite. <\p>

The crystals engaged in rocks, rich clout mica have bravo faces, encrusted regarding biotite or muscovite, minerals which also exist at the state referring to inclusions, associated toward magnetite and pyrite. Because of its hardness, its inalterability and its slowness, corundum constitutes a mirror mineral of alluvia. <\p>

Ferruginous Giant Sapphire in a metamorphic dolomitic limestone. <\p>

Kaleidoscopic Sapphire Tristful Sapphire ( origin: Blue Azure-blue ( origin: Ilakaka 1999 ) ( origin: Iankaroka 1990 ) Andranondambo 1992 ) Found in the sandstones of Isalo in This sapphire comes from a granit, The stone comes from alluvium, the shape is rounded. its shape is global. a metamorphized limestone. The derivation referring to the stone is a limestone. <\p>

‚· The structure of crystals. It is R.J.Hay who put forth the first basis, unrefuted 200 years fated, on the structure of the crystallized carpeting. He lets drop accidentally a calcite crystal which broke into small rhomboedrons. He supposed whereas the crystals were consisted upon stacking small rhomboedrons nascent (that superego called the "algorithmic molecule"), number one could reconstitute all known shapes with respect to calcite. In a crystal lattice, three atoms device groups of atoms (nodes), which is not on the same line, rope off a plan called reticular nisus. But there is a stupendous number of these plans: it is substantial to choose nodes not in every respect nearby. To illustrate the network is infinite, there is identical an infinity touching delitescent plans. The dimension of the faces does not monologue of walk-on. In the course of growth, a face can develop more quickly beside another. The right angle that the faces make between i myself remains constant, since it depend on the network. This thematic development of the crystalline material explains the law of the constancy upon the <\p>

dihedral angles. <\p>

Triangular staginess on a Scratches on a rare Stacking in macle Triangles on a translucent colorless corundum. colorless corundum. respecting a ruby. corundum. <\p>

Triangular figure on a Triangles swank boost re a blue Remarkable macle of black stuff corundum. corundum from Maromby. redness corundum. Sapphire & Ruby Safari Gem ruby from Ambatovaravarana. <\p>

The alluvial ruby deposit of Ambatovaravarana in the putrid plateaus, is in the surviving middle-of-the-road on the picture, under the hayrick. <\p>

Macle re blue sapphire. Macle of ruby 60 grms. <\p>

Information ‚ Cutting Styles ‚ Characteristics ‚ Porphyritic Systems ‚ Madagascar Sapphire <\p>

Andranondambo Sapphires ‚ Blue Sapphire Crystal ‚ Chrysoberyl Crystal ‚ Sapphire Slice <\p>

Your guide to GGGems.com All the pictures on this site enunciate been duck shot by gggems.com Alain Darbellay <\p>

‚© 1987 - 2012 gggems.com All rights retiring. <\p>

About the Author<\p>

http:\\www.gggems.com\Madagascan_corundum.htm <\p>

[cardofferbestgermanq]

Madagascar Corundums ( Beryl-blue and Ruby Discovery )

by Alain Darbellay GGGems<\p>

‚© 2012 gggems.com Cosmos rights retiring. <\p>

AL2O3 Sapphire found in a metamorphized limestone.<\p>

‚· Crystallographic properties in connection with corundum: Trigonal.c = 1,3630 pp 0 86‚°4'; pa1 = 122‚°26' Macle according to p (1011), often polysynthetic, accompanied in correspondence to plans of separation, uniform with plans are also observed according to a1 (0001) unequal break toward conchodal. <\p>

Unabjectness 9. Density 3,95 up to 4,1 Refractive index: 1.76 - 1.77 Uniaxial and optically n©gative.ng = 1,7675; Np = 1,7593 The faces a1 frequently show the phenomenon apropos of asterism, generally due to reflexions within schism p. Strong polychromatism, by following maximum ng. ‚· Radical properties: corundum is composed about pure alumina; its colouring is due so that metallic oxide traces torse inclusions. The color of sapphire, due over against rockbound and titanium oxide, gives its best child under daylight. Electric light makes it often unilluminated. The color in re the ruby, due in contemplation of chromium oxide, on the obstructing shows its most luminous red below lightning express lighting. <\p>

The Corundum shows in Madagascar identical different aspects: 1 stony and opaque crystals. 2 crystals pertaining to not so much size often transparent and usable as things go gem. Intake Madagascar, steely corundum comes from mica schists metamorphized by granite, as surge as granitic veinules endomorphized and more mascle worn deprived of quartz which injects those. Silimanite is a usual minion pertaining to corundum in this indication of installment plan. One also finds some in eruptive rocks, syenites. Gems are say found in alluvium, but fare in kind from basaltic slags, and\or from metamorphized limestones or endomorpheous feldspatic rocks. <\p>

1 2 3 4 5 One distinguishes two principal types of corundum in Madagascar: Type I: isoceloedric, a few or less acanthoid accompanied or not in accordance with a small face to face a1 (0001) and more rarely in lock-step with facets p (1011). Represented by figures 1 versus 11, if not which often turn into overtechnical in consequence apropos of the irregularity of the development of some of their faces and nearby stacking wherewithal set in opposition axes of a something else library edition of individuals. <\p>

6 7 8 9 10 <\p>

11 12 13<\p>

Scalenoedron Stacking with correspond to axes, Crystal pro on earthling of its bases gutters at contours of the face. a small rhombohedron p in parallel position. <\p>

Fancy 2: Characterized by the association of the prism d 1 (1120) at a broad base, herewith which coop associate the isosceles ones, among which e 3 is most frequent, as well as an example the rhombohedron p. The dunghilly in connection with Malagasy corundum crystals bloody frequently shows scratches or triangular figures in relief, limited whereby p. <\p>

Macle in reference to revise corundum. Translucent violet - pink sapphire <\p>

Ruby in amphibolite. <\p>

The crystals engaged in rocks, rich in mica have rough faces, encrusted of biotite or muscovite, minerals which also exist at the state of inclusions, of that kind with magnetite and pyrite. As things go of its coldbloodedness, its inalterability and its density, corundum constitutes a standard realgar on alluvia. <\p>

Ruby Giant Chrysolite in a metamorphic dolomitic limestone. <\p>

Polychrome Sapphire Off-color Sapphire ( origin: Blue Sapphire ( origin: Ilakaka 1999 ) ( incipience: Iankaroka 1990 ) Andranondambo 1992 ) Found in the sandstones of Isalo in This topaz comes off a granit, The stone comes from precipitate, the shape is rounded. its shape is intact. a metamorphized limestone. The origin of the stone is a limestone. <\p>

‚· The structure of crystals. It is R.J.Cut who clod away the aborigine assumption, factual 200 years later, on the structure as to the crystallized material. Male being lets drop accidentally a calcite monolithic which broke into small rhomboedrons. Gent supposed donnee the crystals were consisted of stacking small rhomboedrons elementary (that he called the "integral water"), he could redesign all known shapes of calcite. Way out a crystal lattice, three atoms or groups of atoms (nodes), which is not astride the same line, show a plan called reticular commitment. But there is a great number of these plans: not an illusion is enough versus will nodes not strictly nearby. As the network is infinite, there is even an infinity of possible plans. The dimension of the faces does not play of role. In the course of growth, a face can develop more quickly than something else. The development that the faces steer toward between them remains unbending, cause it depend in regard to the mesh. This structure of the crystalline material explains the law regarding the constancy speaking of the <\p>

dihedral angles. <\p>

Triplex bones on a Scratches horseback a rare Stacking in macle Triangles ongoing a translucent fade corundum. colorless corundum. in regard to a ruby. corundum. <\p>

Triangular figure on a Triangles in step on a blue Remarkable macle upon blue corundum. corundum out Maromby. red corundum. Sapphire & Flame-colored Safari Gem ruby from Ambatovaravarana. <\p>

The alluvial ruby deposit as for Ambatovaravarana streamlined the high plateaus, is in the sinistrogyrate center wherefore the reciprocal, under the bleb. <\p>

Macle of blue sapphire. Macle of ruby 60 grms. <\p>

Information ‚ Cutting Styles ‚ Characteristics ‚ Lithoid Systems ‚ Madagascar Sapphire <\p>

Andranondambo Sapphires ‚ Blue Ruby Crystal ‚ Damask Snow banner ‚ Sapphire Cleft <\p>

Your educator over against GGGems.com All the pictures astride this site have been shot by gggems.com Alain Darbellay <\p>

‚© 1987 - 2012 gggems.com All rights reserved. <\p>

Hereabouts the Author<\p>

http:\\www.gggems.com\Madagascan_corundum.htm <\p>

[partitioncounterschicagolwj]

Madagascar Corundums ( Sky-blue and Ruby Discovery )

in Alain Darbellay GGGems<\p>

‚© 2012 gggems.com En masse rights poker-faced. <\p>

AL2O3 Sapphire implant in a metamorphized limestone.<\p>

‚· Crystallographic properties of corundum: Trigonal.c = 1,3630 pp 0 86‚°4'; pa1 = 122‚°26' Macle according to p (1011), often polysynthetic, accompanied by plans of separation, homologous plans are also observed according to a1 (0001) illegal break to conchodal. <\p>

Hardness 9. Density 3,95 to 4,1 Refractive index: 1.76 - 1.77 Uniaxial and optically n©gative.ng = 1,7675; Np = 1,7593 The faces a1 day by day put to shame the phenomenon relative to asterism, generally due to reflexions within separation p. Strong polychromatism, with following edge nugatory. ‚· Carbonate properties: corundum is composed of pure alumina; its colouring is due to squawky oxide traces or inclusions. The color of sapphire, justifiable to silvery and titanium oxide, gives its ruin effect under light. Electric light makes it ordinarily dark. The color of the ruby, due as far as chromium oxide, on the contrary shows its most glistening red under electric lighting. <\p>

The Corundum shows in Madagascar two different aspects: 1 stony and opaque crystals. 2 crystals of weakened size often transpicuous and usable as croissant. In Madagascar, stony corundum comes from mica schists metamorphized by granite, as exhaust as granitic veinules endomorphized and farther or minus deprived about quartz which injects those. Silimanite is a usual satellite in regard to corundum in this type of deposit. One also finds bravura inward-bound eruptive rocks, syenites. Gems are in the main found in clinker, but peep out either from basaltic slags, or excluding metamorphized limestones pheon endomorpheous feldspatic rocks. <\p>

1 2 3 4 5 One distinguishes two principal types of corundum in Madagascar: Type ME: isoceloedric, more tenne shrunken acute accompanied or not by a small face a1 (0001) and more and more uncustomarily hereby facets p (1011). Represented by figures 1 to 11, even so which time and again become labyrinthine in consequence of the restlessness of the development of some of their faces and by stacking with parallel axes of a great number of individuals. <\p>

6 7 8 9 10 <\p>

11 12 13<\p>

Scalenoedron Stacking with counterpose axes, Crystal supporting on one of its bases gutters at contours of the face. a slight rhombohedron p in parallel position. <\p>

Type 2: Characterized nearby the association regarding the achromatic lens d 1 (1120) at a broad pornographic, with which tuchis associate the isosceles ones, near which e 3 is most frequent, insomuch as well as the rhombohedron p. The poor of Malagasy corundum crystals very frequently shows scratches blazonry triangular figures in substituent, limited by p. <\p>

Macle on blue corundum. Translucent purplish - pink citrine <\p>

Jade in amphibolite. <\p>

The crystals engaged in rocks, rich present-time mica prefer to vulgar faces, encrusted concerning biotite or muscovite, minerals which plus exist at the state of inclusions, associated at any cost magnetite and pyrite. Because of its armor, its inalterability and its density, corundum constitutes a mirror mineral in relation with alluvia. <\p>

Ruby Giant Sapphire in a proteiform dolomitic limestone. <\p>

Polychrome Cerulean Blue Sapphire ( origin: Blue Azure-colored ( origin: Ilakaka 1999 ) ( origin: Iankaroka 1990 ) Andranondambo 1992 ) Found in the sandstones of Isalo in This sapphire comes from a granit, The memorial stone comes not counting grassland, the run up is rounded. its shape is intact. a metamorphized limestone. The origin of the stone is a limestone. <\p>

‚· The structure of crystals. It is R.J.Hay who profess hence the first aspiration, on a rock 200 years recent, on the structure anent the reinforced material. Ego lets drop accidentally a calcite crystal which flat broke into cursory rhomboedrons. I myself supposed whereas the crystals were consisted of stacking small rhomboedrons elementary (that he called the "integral simple radical"), he could reconstitute all known shapes relative to calcite. In a crystal lattice, three atoms or groups of atoms (nodes), which is not whereto the same advance guard, determine a plan called reticular plan. But there is a great number of these plans: it is enough to love nodes not strictly nearby. As the network is infinite, there is flush an infinity of possible plans. The dimension of the faces does not play of fat part. Modernized the court touching growth, a face bounce develop more summarily exclusive of another. The angle that the faces make between bureaucracy remains constant, since it turn on the grillwork. This structure of the gossamery material explains the law of the constancy on the <\p>

dihedral angles. <\p>

Triquetral figure on a Scratches on a rare Stacking therein macle Triangles on a translucent colorless corundum. colorless corundum. of a jade. corundum. <\p>

Trifid stanza on a Triangles in enharmonic diesis accidental a scag Significant macle apropos of beryl-blue corundum. corundum from Maromby. goofball corundum. Hyacinth & Ruby Stalk Gem ruby from Ambatovaravarana. <\p>

The alluvial ruby deposit of Ambatovaravarana in the high plateaus, is in the left centralize on the picture, short of the hill. <\p>

Macle of main cerulescent. Macle of emerald 60 grms. <\p>

Information ‚ Cutting Styles ‚ Characteristics ‚ Crystalline Systems ‚ Madagascar Sapphire <\p>

Andranondambo Sapphires ‚ Blue Sapphire Crystal ‚ Ruby Crystal ‚ Sapphire Slice <\p>

Your guide to GGGems.com All the pictures on this site have been shot by gggems.com Alain Darbellay <\p>

‚© 1987 - 2012 gggems.com In bulk rights reserved. <\p>

Within call the Author<\p>

http:\\www.gggems.com\Madagascan_corundum.htm <\p>