The Hope Pearl, one of the largest nacreous pearls on record, is a bronze-to-white, pear-shaped 5.1 cm-long natural pearl, probably a blister pearl from a black-lipped pearl oyster (Pinctada margaritifera) with a reported weight of approximately 1,800 pearl grains or 450 ct (1 pearl grain = 0.25 carat).
It is important to clarify that a natural blister pearl is a pearl generated inside a pearl sac (without human intervention) that perforated the mantle tissue of the host mollusc and adhered to the inner shell, being subsequently covered with successive layers of shell that can be nacreous or non-nacreous.
This famous pearl belonged to the British banker Henry Phillip Hope (1774-1839), hence the name, in a collection that included about 150 other natural pearls and many famous gems, including the Hope Diamond (the famous Fancy Dark greyish blue 45.52 ct diamond from India that once belonged to the French crown jewels).
Portrait of Henry Phillip Hope by Thomas Goff Lupton.
The Hope Diamond is here in its original 1911 mounting by کارتیه in a rare photo next to the pearl.
The Hope Pearl was bought in 1908 by گارارد of London for £9,000 and later, in 1974, acquired by Mohammed Mahdi Al-Tajir, who reportedly got it from a Parisian jeweller for $200,000.
Mounted on a gem-set crown it is currently in a private collection and used to be on display at the Natural History Museum in London.
Photo Smithsonian Institution, Museum of Natural History; portrait by Thomas Goff Lupton
مقالات مهمان توسط Rui Galopim de Carvalho:
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روی گالوپیم دِ کاروالیو روئی یک مشاور مستقل و مشهور آموزش گوهرشناسی، نویسنده، متخصص آموزش صنایع لوکس و مدرس بین‌المللی محبوب در زمینه گوهرشناسی و تاریخ مواد گوهرین است. او در طول 30 سال تجربه خود به عنوان گوهرشناس، مجموعه‌های مهمی را در موزه‌های عمومی و خصوصی، به ویژه جواهرات سلطنتی پرتغال، مورد مطالعه قرار داده است.
روی، بنیانگذار مجموعه وبینارهای محبوب Home Gemmology که در دوران قرنطینه کووید-۱۹ راه‌اندازی شد، سابقه طولانی در زمینه اطلاع‌رسانی در حوزه گوهرشناسی دارد، به‌ویژه در رسانه‌های اجتماعی که در آن چهره‌ای محبوب است.
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