John Sinkankas, Date of Birth, Place of Birth, Date of Death
TweetJohn Sinkankas
American gemologist
Date of Birth: 15-May-1915
Place of Birth: Paterson, New Jersey, United States
Date of Death: 17-May-2002
Profession: military officer, mineralogist
Nationality: United States
Zodiac Sign: Taurus 
About John Sinkankas
- John Sinkankas (May 15, 1915 – May 17, 2002) was an honored Navy officer and aviator, noted gemologist, gem carver and gem faceter, author of many books and articles on minerals and gemstones, and a bookseller and bibliographer of rare books.
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See Also
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- Famous mineralogist's Birthdays in May, United States