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Joined: Apr 1, 2026
Topics: 9 / Replies: 37
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Extraordinarily large non-nacreous pearl weighing 25kg from the giant clam Tridacna gigas discovered in the Philippines

The website of Kari Pearls - - reports of another large blister pearl, still attached to one of the valves of the giant clam Tridacna gigas. The pear...

13 years ago
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Extraordinarily large non-nacreous pearl weighing 25kg from the giant clam Tridacna gigas discovered in the Philippines

Another famous blister pearl discovered from the giant clam Tridacna gigas, also from the coral reefs off the coast of the Island of Palawan in the Ph...

13 years ago
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Logan Blue Sapphire

The NMNH's webpage in its Gem Gallery on the Logan Sapphire (Catalog No. G3703), reveals a very significant fact about the "Logan Blue Sapphire" not i...

13 years ago
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Logan Blue Sapphire

Sri Lankan Sapphires are lighter and brighter than the Kashmir and Burmese Sapphires. These sapphires are generally a saturated medium blue in color a...

13 years ago
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Logan Blue Sapphire

Having followed the discussion on the Logan Blue Sapphire so far, I thought it would be appropriate and useful for the ongoing discussion, if I upload...

13 years ago
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Extraordinarily large non-nacreous pearl weighing 25kg from the giant clam Tridacna gigas discovered in the Philippines

Compared to the weight of Pearl of Allah/Pearl of Lao Tzu (6.1 kg), even if we deduct 5 kg for the weight of the shell/valve, a weight of 20 kg for th...

13 years ago
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Logan Blue Sapphire

Another obituary that appeared in the New York Times of March 16, 1994, essentially gives the same details as in the Washington Post obituary, but giv...

13 years ago
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Logan Blue Sapphire

Thanks John for your update on the different facets of the life of Mrs. John A. Logan, a remarkable lady, whose efforts touched the lives of many Amer...

13 years ago
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Logan Blue Sapphire

Congressional Records : March 24, 1994 From the Washington Post, Mar. 15, 1994Polly Guggenheim Logan Dies; Art Patron, Washington Hostess (By Bart Ba...

13 years ago
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Logan Blue Sapphire

I have read with great interest your thread on the Logan Blue Sapphire, and the original webpage on the Logan Blue sapphire in the jewelry blog of int...

13 years ago
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Logan Blue Sapphire

The third and most important contribution was made by Mrs. Beverly Pollard Page, mother of Jennifer Page, and niece to Mrs. John A. Logan. Beverly Po...

13 years ago
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Logan Blue Sapphire

The second contribution to our webpage was by Mrs. Alice Payne, who had the privilege of working for Mrs. John A. Logan as her personal accountant fro...

13 years ago
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Replies: 11
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Nautilus Pearls

Hello Tentate,I have studied the images you uploaded relevant to the question you have raised, after enlarging the photos using XnView. As you have su...

13 years ago
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Nautilus Pearls

Hello "tentate", Welcome to our forums!!!! We will take a closer look at the photos and answer your post within 24 hours. Meanwhile please join our...

13 years ago
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