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Here are some questions that the article could address, preferably with citations.

• What was the subject of Tolkowsky's Master's thesis?
• Have any wikipedians seen the thesis?
• Were Tolkowsky's scholarly pursuits typical of the place he went to school?

• Did anyone else publish a parameterized diamond design before Tolkowsky?

• Where was Tolkowsky born?
• Where did he grow up?
• Where did he spend his adult life?
• How long was he actively in the diamond cutting business?
• How he mange to discover the round shaped diamond ? — Preceding unsigned comment added by 103.54.98.209 ( talk) 07:28, 10 June 2017 (UTC) reply

• Did he ever propose modifications to his 1919 round brilliant design?
• His family was cutting diamonds circa 1919.
  • Did these diamonds have girdles?
  • What angle were the star facets cut at? 15 degrees? or 19-20 degrees?
  • How steep were the upper girdle facets?
  • How many sides did the crown main facets have? 4? or 6?
  • How long were the lower girdle facets?
• In 1919, Tolkowsky wrote that "The diamonds used as gems are generally colourless or only faintly coloured ; it can be taken that all the light that passes into the stones passes out again."
  • Using the modern color grading scale, what color were the diamonds that Tolkowsky was working with?
  • Did his assumption that "all the light that passes into the stones passes out again" cause a significant error? See Talk:Material_properties_of_diamond#Optical_properties
  • The quotation is from [1]

• How large was Tolkowsky's family's diamond business?
• Where was the business located? Antwerp, Belgium
• How much did the business grow while Tolkowsky was actively involved in it?
• Is the business still going as an independent concern? Yes, it is called Tolkowsky and Sons, currently run by Gabi Tolkowsky.
• Did Tolkowsky ever work in other people's businesses?
• How many generations of Tolkowsky's ancestors were in the diamond business?
• Did Tolkowsky have any descendants? Yes, most of them live in Antwerp, Belgium.
• Besides Gabi Tolkowsky, did any of Tolkowsky's younger relatives go into the diamond business? Gabi's son is also working in the industry as is his daughter.