{"id":141,"date":"2012-09-02T20:35:47","date_gmt":"2012-09-02T19:35:47","guid":{"rendered":"http:\/\/cluster006.ovh.net\/~elinorac\/blog\/?p=141"},"modified":"2013-05-20T17:24:02","modified_gmt":"2013-05-20T16:24:02","slug":"joaillerie-principaux-materiaux-precieux","status":"publish","type":"post","link":"http:\/\/www.elinorabijoux.com\/blog\/joaillerie-principaux-materiaux-precieux\/","title":{"rendered":"Joaillerie: principaux mat\u00e9riaux pr\u00e9cieux"},"content":{"rendered":"

L’or<\/strong><\/p>\n

Le nombre de carats correspond au degr\u00e9 de puret\u00e9 de l’or. De l’or \u00e0 24 carat repr\u00e9sente de l’or pratiquement pur, donc tr\u00e8s mal\u00e9able.<\/p>\n

Les diff\u00e9rentes couleurs d’or sont des alliages d’or avec d’autres m\u00e9taux. En voici les taux, exprim\u00e9s en milli\u00e8mes:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\n\n
Au<\/div>\n<\/td>\n
\n
Ag<\/div>\n<\/td>\n
\n
Cu<\/div>\n<\/td>\n
\n
Ni<\/div>\n<\/td>\n
\n
Pd<\/div>\n<\/td>\n
\n
Zn<\/div>\n<\/td>\n
\n
Fe<\/div>\n<\/td>\n<\/tr>\n
\n
Or rouge<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
45<\/div>\n<\/td>\n
\n
205<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Or rose<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
90<\/div>\n<\/td>\n
\n
160<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Or jaune<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
125<\/div>\n<\/td>\n
\n
125<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Or jaune clair<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
160<\/div>\n<\/td>\n
\n
90<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Or vert<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
200<\/div>\n<\/td>\n
\n
50<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Or gris<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
<\/td>\n\n
100<\/div>\n<\/td>\n
\n
125<\/div>\n<\/td>\n
<\/td>\n\n
25<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n
\n
Ors gris<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
<\/td>\n\n
35<\/div>\n<\/td>\n
\n
165<\/div>\n<\/td>\n
<\/td>\n\n
50<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n
\n
Ors gris palladi\u00e9<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
50<\/div>\n<\/td>\n
<\/td>\n\n
50<\/div>\n<\/td>\n
\n
150<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/tr>\n
\n
Ors blanc<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
<\/td>\n<\/td>\n\n
250<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Ors blanc<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n\n
250<\/div>\n<\/td>\n<\/tr>\n
\n
Ors blanc<\/div>\n<\/td>\n
\n
750<\/div>\n<\/td>\n
\n
105<\/div>\n<\/td>\n
\n
35<\/div>\n<\/td>\n
\n
9<\/div>\n<\/td>\n
\n
100<\/div>\n<\/td>\n
\n
1<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

(source:\u00a0http:\/\/ocarat.com\/guides\/en-savoir-plus\/or<\/a>)<\/p>\n

Pour la dorure \u00e0 la feuille d’or, on utilise de l’or pur.<\/p>\n

Les pierres pr\u00e9cieuses<\/strong>
\n
\n<\/strong>
\nDiamant: g\u00e9n\u00e9ralement blanc, d’autres couleurs sont utilis\u00e9es en joaillerie et dans l’industrie.
\nSaphir: normalement bleu, il peut se d\u00e9cliner notamment en jaune et rose.
\nRubis: rouge et uniquement rouge, mais ce rouge peut \u00eatre nuanc\u00e9, par exemple l\u00e9g\u00e8rement violac\u00e9 ou ros\u00e9.
\n\u00c9meraude: verte, c’est la pierre pr\u00e9cieuse la plus fragile en raison de ses impuret\u00e9s.<\/p>\n

Les pierres fines<\/strong>
\n
\n<\/strong>
\nLe terme de semi-pr\u00e9cieuse est maintenant interdit en France.<\/p>\n

Ambre: orang\u00e9, se d\u00e9cline en jaune, verd\u00e2tre ou noir. Il s’agit de r\u00e9sine fossilis\u00e9e.
\nAigue-marine: bleu-vert p\u00e2le et transparent.
\nAm\u00e9thyste: violet et l\u00e9g\u00e8rement transparent
\nCitrine: jaune et l\u00e9g\u00e8rement transparent
\nGrenat: rouge fonc\u00e9, moins transparente que les pr\u00e9c\u00e9dentes mais pas totalement opaque
\nCristal de roche: transparent. Attention! le cristal utilis\u00e9 pour la verrerie est un simple verre chauff\u00e9 tr\u00e8s fort et au quel on ajoute du plomb! Lorsque vous achetez des bijoux fantaisies \u00e0 bas prix, c’est ce dernier type de cristal qui est utilis\u00e9.
\nCordi\u00e9rite: bleu transparent
\nP\u00e9ridot: vert ou vert-jaune
\nTanzanite: bleu\u00a0lavande. Attention, comme son nom l’indique, elle provient uniquement de Tanzanie, un pays d’Afrique du sud-est.
\nTopaze: transparente, se d\u00e9cline en plusieurs couleurs (bleu, violet, rouge\u00e2tre, vert).
\nTourmaline: transparente, se d\u00e9cline en vert, bleu, marron ou rose.
\nZircon: transparent, bleu, vert p\u00e2le, brun<\/p>\n","protected":false},"excerpt":{"rendered":"

L’or Le nombre de carats correspond au degr\u00e9 de puret\u00e9 de l’or. De l’or \u00e0 24 carat repr\u00e9sente de l’or pratiquement pur, donc tr\u00e8s mal\u00e9able. Les diff\u00e9rentes couleurs d’or sont des alliages d’or avec d’autres m\u00e9taux. En voici les taux, … Continuer la lecture →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[32],"tags":[995,835,836],"_links":{"self":[{"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/posts\/141"}],"collection":[{"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/comments?post=141"}],"version-history":[{"count":4,"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/posts\/141\/revisions"}],"predecessor-version":[{"id":1520,"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/posts\/141\/revisions\/1520"}],"wp:attachment":[{"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/media?parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/categories?post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.elinorabijoux.com\/blog\/wp-json\/wp\/v2\/tags?post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}