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Because of their unique beauty and their inseparable bond between nature and human, pearls have held their value very well throughout centuries.

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Pearls from the Oykel River, northwest of Inverness, for example, are a sweet rose pink, and have always been the most valuable." Finlay, Victoria. Jewels: A Secret History (Kindle Location 1341). Random House Publishing Group. Kindle Edition. When other value factors are equal, the second most valuable shape is near-round, and then followed next in value by other symmetrical shapes like oval, button, drop and baroque. How Pearl Size Impacts Its Value? From other species [ edit ] A natural conch pearl with gem flame patterning. A collection of natural quahog pearls. A shell of the Indian volute, Melo melo, surrounded by a number of pearls from this species Conch pearl pendant

So how can you tell if the pearls you own are natural or cultured? Unfortunately, you won’t be able to spot the difference without proper gemological and laboratory tests. Testing methods such as X-rays, energy-dispersive X-ray fluorescence, laser light, and Raman spectrometry will help separate natural from cultured pearls. What Affects The Value Of A Pearl? The Hebrew word פְּנִינִים 'pearl(s)' appears in several places in the Hebrew Bible (Job 28:18; Proverbs 3:15; 8:11; 20:15; 31:10; Lamentations 4:7), although its etymology is unclear. [53] New Testament scriptures [ edit ] Religious pendant showing Christ blessing, framed with rubies and pearls, from the Byzantine empire, 12th or 13th century a b "Guides for the Jewelry, Precious Metals, and Pewter Industries". Ftc.gov. May 30, 1996. Archived from the original on May 28, 2010 . Retrieved July 17, 2010.

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Holy things are compared to pearls in Matthew 7:6: "Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you." Japanese pearl producers also invested in producing cultured pearls with freshwater mussels in the region of Shanghai, China. China has since become the world's largest producer of freshwater pearls, producing more than 1,500 metric tons per year (in addition to metric measurements, Japanese units of measurement such as the kan and momme are sometimes encountered in the pearl industry). A few species produce pearls that can be of interest as gemstones. These species include the bailer shell Melo, the giant clam Tridacna, various scallop species, Pen shells Pinna, and the Haliotis iris species of abalone. Pearls of abalone, or paua, are mabe pearls, or blister pearls, unique to New Zealand waters and are commonly referred to as 'blue pearls'. They are admired for their incredible luster and naturally bright vibrant colors that are often compared to opal. Another example is the conch pearl (sometimes referred to simply as the 'pink pearl'), which is found very rarely growing between the mantle and the shell of the queen conch or pink conch, Strombus gigas, a large sea snail or marine gastropod from the Caribbean Sea. These pearls, which are often pink in color, are a by-product of the conch fishing industry, and the best of them display a shimmering optical effect related to chatoyance known as 'flame structure'. Bycroft, Michael (2019). Gems in the Early Modern World: Materials, Knowledge and Global Trade, 1450–1800. Switzerland: Palgrave Macmillan. p.124. ISBN 9783319963792. God will admit those who believe and work righteous deeds, to Gardens beneath which rivers flow: they shall be adorned therein with bracelets of gold and pearls; and their garments there will be of silk.Despite the common misperception, Mikimoto did not discover the process of pearl culture. The accepted process of pearl culture was developed by the British Biologist William Saville-Kent in Australia and brought to Japan by Tokichi Nishikawa and Tatsuhei Mise. Nishikawa was granted the patent in 1916, and married the daughter of Mikimoto. Mikimoto was able to use Nishikawa's technology. After the patent was granted in 1916, the technology was immediately commercially applied to akoya pearl oysters in Japan in 1916. Mise's brother was the first to produce a commercial crop of pearls in the akoya oyster. Mitsubishi's Baron Iwasaki immediately applied the technology to the south sea pearl oyster in 1917 in the Philippines, and later in Buton, and Palau. Mitsubishi was the first to produce a cultured south sea pearl– although it was not until 1928 that the first small commercial crop of pearls was successfully produced.