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Proiect:   Obiecte de podoaba Prof.coordonator:   Radu-Mihail Pintilie Elevi:   Abonculesei Diana Apavaloaei Iustina Dudanu Georgiana Zargiu Madalina
Aurul si alte pietre pretioase   Aurul pur (1000‰) este prea moale si de obicei se amesteca cu alte metale (aliaje) pentru al face mai tare si mai utilizabil pentru bijuterii.
Aur
Bijuterii din aur galben si aur alb
Care este diferenta dintre aurul galben, alb si rosu? Aurul pur (care este intotdeauna galben) este prea moale pentru folosirea la bijuterii. Metalele care se folosesc in amestec cu aurul, pentru a-l intari, pot modifica culoarea acestuia, rezultand astfel un aur de diferite nuante de galben, alb si rosu.
De ce exista diferenta de pret intre bijuterii similare? Exista cativa factori care influenteaza valoarea unei bijuteri din aur: Design - designul bijuteriilor le creste valoarea mai ales daca este unicat. Finisajul - finisajele speciale ale aurului cum ar fi de exemplu: mat sau sablat se adauga la costul bijuteriei din aur.
Diamantul ,[object Object]
Diamantul  -  cea mai tare substanta cunoscuta de om, este carbon cristalizat, incolor , care are calitati unice de a reflecta lumina. Pentru ca este compus dintr-un singur element, diamantul este cea mai pura dintre pietrele pretioase.
Diamante
Argint ,[object Object]
Bijuterii din argint
Platina ,[object Object]
Inel din platina
[object Object],[object Object],[object Object]

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Obiecte de podoaba

  • 1. Proiect: Obiecte de podoaba Prof.coordonator: Radu-Mihail Pintilie Elevi: Abonculesei Diana Apavaloaei Iustina Dudanu Georgiana Zargiu Madalina
  • 2. Aurul si alte pietre pretioase Aurul pur (1000‰) este prea moale si de obicei se amesteca cu alte metale (aliaje) pentru al face mai tare si mai utilizabil pentru bijuterii.
  • 3. Aur
  • 4. Bijuterii din aur galben si aur alb
  • 5. Care este diferenta dintre aurul galben, alb si rosu? Aurul pur (care este intotdeauna galben) este prea moale pentru folosirea la bijuterii. Metalele care se folosesc in amestec cu aurul, pentru a-l intari, pot modifica culoarea acestuia, rezultand astfel un aur de diferite nuante de galben, alb si rosu.
  • 6. De ce exista diferenta de pret intre bijuterii similare? Exista cativa factori care influenteaza valoarea unei bijuteri din aur: Design - designul bijuteriilor le creste valoarea mai ales daca este unicat. Finisajul - finisajele speciale ale aurului cum ar fi de exemplu: mat sau sablat se adauga la costul bijuteriei din aur.
  • 7.
  • 8. Diamantul - cea mai tare substanta cunoscuta de om, este carbon cristalizat, incolor , care are calitati unice de a reflecta lumina. Pentru ca este compus dintr-un singur element, diamantul este cea mai pura dintre pietrele pretioase.
  • 10.
  • 12.
  • 14.