search
  • Entrar
    Inscrever-se
  • Atendimento ao cliente apenas em inglês

    1-800-464-1640

    Internacional:

    +66-39601289

  • Mudar idioma
  • USD
  • CARRINHO
Frequently Asked Questions (FAQ) / Heat Treated and Untreated Sapphire

How do I determine that a sapphire has not been heated?

Oval Faceted Heated Blue Ceylon Sapphire

Unheated sapphire is an espically rare find nowadays as most sapphire available on the market today has been treated to enhance color, clarity and/or durability. Determining conclusively whether a loose sapphire has been heat-treated is something that only a very experienced gemologist can do. Gemologists examine internal structures under high magnification and look for the presence of crystal structures that would be altered by heat treatment, since many characteristic inclusions such as rutile and zircon crystals have a lower melting point than corundum. Some laboratories also use high-tech tools such as Raman spectroscopy and laser tomography.

Return to FAQ HOME

STAY IN TOUCH | NEWSLETTER
*Você está se inscrevendo para receber e-mail promocional da GemSelect.
Parceiros e Confiança Opções de pagamento

Mude para a versão móvel

direito autoral © 2005-2024 GemSelect.com todos os direitos reservados.

A reprodução (texto ou gráficos) sem o consentimento expresso por escrito da GemSelect.com (SETT Company Ltd.) é estritamente proibida.

797

Continue comprando
Confira
Continue comprando
Confira