Lanciajewelry Co., Ltd
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Ladies 18k Gold Gemstone Rings Ruby And Diamond Ring White Gold
Ladies 18k Gold Gemstone Rings Ruby And Diamond Ring White Gold
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Description
ear haped atural uby emstone enuine iamond ing ine ewellery tem pecification ing nfomation iamond nfomation uby nfomation etal ype olid 18 t old ose iamonds atural iamonds uby enuine 100 atural Approximate eight 1 96g 2 20g etting ype ave setting etting ype rong setting tyle iamond uby ring iamond eight 0 078 0 082ct tone eight 0 50ct 0 605ct ing ize 6 6 5 7 7 5 8 ut ound ut ound etal tamp Au750 larity larity tock umber 1300 olor imensions Approx 4mm ictrue etails uby recious tone haracters f all the color varieties of precious corundum the red or ruby oriental ruby is the most highly prized t is probably identical with the anthrax of heuphrastus and is one of the stones referred to in medieval times as carbuncle t has all the general characters of corundum and is only distinguished from other varieties by its red color he tone of color differs in different specimens being sometimes deep and intense masculine ruby sometimes pale and light feminine ruby he lighter shades vary from pale rose red to reddish white some specimens being so faintly tinged with red as to appear almost colorless he darker colors are pure red carmine red or blood red the red of the majority of rubies however has a more or less distinct tinge of blue or violet this being especially noticeable in transmitted light he shade of color which is most admired is the deep pure carmine red or carmine red with a slight bluish tinge urmese has compared this color to that of the blood of a freshly killed pigeon hence the references to such stones as being of pigeon s blood red he various shades of red of the ruby are remarkable in that they lose none of their beauty in artificial light a statement which cannot be made respecting any other precious stone of the same color he coloring of rubies is not always perfectly uniform colorless layers being sometimes interposed between portions colored red n such cases the stone will often become uniformly colored throughout after heating rovided the stone is gradually heated it may be raised to the highest temperatures with no fear of fracture he interesting changes in color exhibited by certain gems when gradually heated and then allowed to cool have been already described uring cooling the ruby becomes first white and then green finally regaining its original red color so that in this stone the coloring matter is neither permanently changed nor destroyed by exposure to high temperatures t is otherwise however with the sapphire for this gem at a high temperature loses its beautiful blue and takes on a dull gray color he red coloring matter of the ruby is therefore certainly not organic in nature as seems to be the case with those gems which lose their color on heating t is more likely to be some compound of chromium an element whose presence has been detected in the analysis of some rubies hat the coloring of the ruby is due to chromium is also suggested by the fact that the color of the so called ruby glass is obtained by adding a small amount of chromium oxide to the other constituents of the glass remy also used the same substance for the production of the red color of his artificially prepared rubies ome of the crystals produced by this investigator were partly red and partly blue resembling in this respect certain natural rubies which occur rarely in urma he dichro sm of deeply colored rubies is very noticeable with the exception of stones of very pale color a difference in the color of every ruby can be observed when viewed in different directions n looking through a dark colored crystal of ruby such as is illustrated in ig a d in a direction perpendicular to the basal planes it will appear of an intense red color either pure red or with a slight tinge of violet f however the light received by the eye has passed through the crystal in a direction perpendicular to a prism face or edge the stone will appear much lighter in color n allowing the light which has passed through the crystal in this direction to enter the dichroscope the two images in that position of the instrument in which the greatest difference in color is shown will be one light and the other dark red usually tinged with violet n all other directions in which the light may travel with one exception the two images will be more or less differently colored his exceptional direction is perpendicular to the basal planes and coincides with the direction of the optic axis Along this direction the crystal is singly refracting and the two images seen in the dichroscope are of the same deep red color as the crystal appears when viewed in this direction without the intervention of the dichroscope he dichro sm of the ruby affords a means whereby it may be distinguished with certainty from other red stones such as spinel and the different varieties of garnet which crystallize in the cubic system and thus being singly refracting can show no dichro sm he fact that the color of the ruby varies with the direction in which it is viewed makes it necessary that the form of the cut gem should have a certain definite relation to that of the crystal in order to obtain the finest color effect he plane of the largest facet of the cut stone namely the table must coincide as closely as possible in direction with the basal planes of the crystal in order to obtain the greatest depth in color of which the stone is capable he greater the angle at which the table is inclined to the basal plane of the crystal the poorer will be the color effect produced and when the table is perpendicular to the basal plane and therefore parallel to the prism faces of the crystal the minimum color effect is the result ome rubies show on the basal plane or still more plainly on a cut and polished curved surface approximating to the basal plane in direction a six rayed star of glimmering reflected light uch stones are known as star rubies or asteriated rubies sometimes also as ruby cat s eye he appearance is similar to that seen in the star sapphire but as a rule less marked it will be therefore considered in greater detail under sapphire
Specification
ear haped atural uby emstone enuine iamond ing ine ewellery tem pecification ing nfomation iamond nfomation uby nfomation etal ype olid 18 t old ose iamonds atural iamonds uby enuine 100 atural Approximate eight 1 96g 2 20g etting ype ave setting etting ype rong setting tyle iamond uby ring iamond eight 0 078 0 082ct tone eight 0 50ct 0 605ct ing ize 6 6 5 7 7 5 8 ut ound ut ound etal tamp Au750 larity larity tock umber 1300 olor imensions Approx 4mm ictrue etails uby recious tone haracters f all the color varieties of precious corundum the red or ruby oriental ruby is the most highly prized t is probably identical with the anthrax of heuphrastus and is one of the stones referred to in medieval times as carbuncle t has all the general characters of corundum and is only distinguished from other varieties by its red color he tone of color differs in different specimens being sometimes deep and intense masculine ruby sometimes pale and light feminine ruby he lighter shades vary from pale rose red to reddish white some specimens being so faintly tinged with red as to appear almost colorless he darker colors are pure red carmine red or blood red the red of the majority of rubies however has a more or less distinct tinge of blue or violet this being especially noticeable in transmitted light he shade of color which is most admired is the deep pure carmine red or carmine red with a slight bluish tinge urmese has compared this color to that of the blood of a freshly killed pigeon hence the references to such stones as being of pigeon s blood red he various shades of red of the ruby are remarkable in that they lose none of their beauty in artificial light a statement which cannot be made respecting any other precious stone of the same color he coloring of rubies is not always perfectly uniform colorless layers being sometimes interposed between portions colored red n such cases the stone will often become uniformly colored throughout after heating rovided the stone is gradually heated it may be raised to the highest temperatures with no fear of fracture he interesting changes in color exhibited by certain gems when gradually heated and then allowed to cool have been already described uring cooling the ruby becomes first white and then green finally regaining its original red color so that in this stone the coloring matter is neither permanently changed nor destroyed by exposure to high temperatures t is otherwise however with the sapphire for this gem at a high temperature loses its beautiful blue and takes on a dull gray color he red coloring matter of the ruby is therefore certainly not organic in nature as seems to be the case with those gems which lose their color on heating t is more likely to be some compound of chromium an element whose presence has been detected in the analysis of some rubies hat the coloring of the ruby is due to chromium is also suggested by the fact that the color of the so called ruby glass is obtained by adding a small amount of chromium oxide to the other constituents of the glass remy also used the same substance for the production of the red color of his artificially prepared rubies ome of the crystals produced by this investigator were partly red and partly blue resembling in this respect certain natural rubies which occur rarely in urma he dichro sm of deeply colored rubies is very noticeable with the exception of stones of very pale color a difference in the color of every ruby can be observed when viewed in different directions n looking through a dark colored crystal of ruby such as is illustrated in ig a d in a direction perpendicular to the basal planes it will appear of an intense red color either pure red or with a slight tinge of violet f however the light received by the eye has passed through the crystal in a direction perpendicular to a prism face or edge the stone will appear much lighter in color n allowing the light which has passed through the crystal in this direction to enter the dichroscope the two images in that position of the instrument in which the greatest difference in color is shown will be one light and the other dark red usually tinged with violet n all other directions in which the light may travel with one exception the two images will be more or less differently colored his exceptional direction is perpendicular to the basal planes and coincides with the direction of the optic axis Along this direction the crystal is singly refracting and the two images seen in the dichroscope are of the same deep red color as the crystal appears when viewed in this direction without the intervention of the dichroscope he dichro sm of the ruby affords a means whereby it may be distinguished with certainty from other red stones such as spinel and the different varieties of garnet which crystallize in the cubic system and thus being singly refracting can show no dichro sm he fact that the color of the ruby varies with the direction in which it is viewed makes it necessary that the form of the cut gem should have a certain definite relation to that of the crystal in order to obtain the finest color effect he plane of the largest facet of the cut stone namely the table must coincide as closely as possible in direction with the basal planes of the crystal in order to obtain the greatest depth in color of which the stone is capable he greater the angle at which the table is inclined to the basal plane of the crystal the poorer will be the color effect produced and when the table is perpendicular to the basal plane and therefore parallel to the prism faces of the crystal the minimum color effect is the result ome rubies show on the basal plane or still more plainly on a cut and polished curved surface approximating to the basal plane in direction a six rayed star of glimmering reflected light uch stones are known as star rubies or asteriated rubies sometimes also as ruby cat s eye he appearance is similar to that seen in the star sapphire but as a rule less marked it will be therefore considered in greater detail under sapphire
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Gemstone Gold Jewelry,Real Gemstone Jewelry,Diamond Gemstone Jewelry