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Iran (formally Persia) possesses an extraordinary treasure of royal jewelry, including a copious amount of mother-of-pearl from the Persian Gulf.The Iranian crown jewels are among the largest, most dazzling and valuable jewel collection in the world.
Chequers Ring, three-quarter profile The Chequers Ring is one of the few surviving pieces of jewellery worn by Queen Elizabeth I of England. The mother-of-pearl ring, set with gold and rubies, includes a locket with two portraits, one depicting Elizabeth and the other traditionally identified as Elizabeth's mother Anne Boleyn, but possibly her step-mother Catherine Parr.
Nacre (/ ˈ n eɪ k ər / NAY-kər, also / ˈ n æ k r ə / NAK-rə), [1] also known as mother-of-pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed. It is strong, resilient, and iridescent.
Eagle-eyed watchers of royal drama will note the Queen Mother's unique ring in the penultimate episode.
A beaded cultured pearl shows a solid center with no concentric growth rings, whereas a natural pearl shows a series of concentric growth rings. A beadless cultured pearl (whether of freshwater or saltwater origin) may show growth rings, but also a complex central cavity, witness of the first precipitation of the young pearl sac. [13]
Eilat stone; Epidosite; Glimmerite; Goldstone (glittering glass) Hawk's eye; Helenite (artificial glass made from volcanic ash) Iddingsite; Kimberlite; Lamproite; Lapis lazuli; Libyan desert glass; Llanite; Maw sit sit; Moldavite; Obsidian; Apache tears; Pallasite; Peridotite (also known as olivinite) Siilinjärvi carbonatite; Soapstone (also ...