弗里达杰普逊为了蓝宝石玻璃杯设计奖特制的戒指。
Unique ring designed by Frida Jeppsson for the Bombay Sapphire Designer Glass Awards.
早在公元1世纪，罗马人已生产出精美的宝石玻璃品。
Fine cameo glass was produced by the Romans in the 1st century AD.
矿物玻璃抗磨能力较好，但抗垂直打击能力强于蓝宝石玻璃。
Mineral glass anti-wear ability is good, but the ability to resist vertical blow is stronger than the sapphire glass.
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