What does commercial diamond mean? What is the difference between commercial and noncommercial?

Hi Fred-Is it a true statement that most jewelers buy their diamonds from a few select wholesalers? If so can the general public buy from the same sources? If not where would you suggest is a great place to buy loose cut diamonds.
Also my wife does not believe diamonds appreciate much if at all because [...]

good day sir,please gave me a clarification regarding the black diamond?if this carbonado is significantly alone to the rock or there are some other color gem are present toghether in the rock were black diamonds are found?because my neighbor mountain were found in the rock surface a gem which been test to private agent and [...]

Thursday 7:18 pm est.
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I found what I believe to be a round diamond on a blacktop parking lot about 10 days ago. The gem is lose and when it caught my eye it appeared like an odd shaped metallic thing. I reached down to pick it up and see what it was and when [...]

Fred, how important is the big three angles 34.5%, 40.75%, and 43% to the cut of the diamond. Most "ideal" cuts I find are spot on these numbers. Would I be ok with say 35%, 40.6, and 42.5% on a 61.1 depth and 56 table XXX diamond that is SI2?

Hello…. I recently got a engagement ring made through a jewellry store and purchases a 1.26 heart and arrow canadian diamond cert through EGL, f coulour VS2 ideal. I have noticed there is a carbon spot right in the table i can see should that be there i paid close to 20grand for this ring!! [...]

Fred, what are your thoughts on bluenile.com? Are they a trustworthy place to buy an engagement ring, or should I shop elsewhere? It's hard to tell quality of the actual ring by a picture, but judging by the "numbers" in the descriptions of the diamonds; when building a ring I can get a [...]

Hi Fred,
How much superior are Harry Winston diamonds to Cartier to an excellent quality GIA diamond from a local jeweler?
I'm looking for an engagement ring with a $15,000-$17,000 budget. Can I find a comparable diamond from "the rest" at a much more competitive price or is it really worth buying a HW [...]

Hi Diamond Guy,
My fiance recently proposed to me with a ring bought from Blue Nile. It is a round brilliant in a solitaire setting. The diamond came with a GIA certificate which was graded G color VS2 clarity, excellent/ideal cut. After wearing the diamond for a few days I noticed a black [...]

what is depth and table? and how much does that effect cost?I saw 2 diamonds everything except depth and table was the same but 1 was a thousand dollars more.