Welcome to the IGS Forums! Please note that you'll need to create an account to participate in these forums. Please read our brief Forum Rules and Etiquette.
Show More Information
Forums Home » General Gem-Related Discussion

natural rough diamonds

This topic contains 1 reply, has 2 voices, and was last updated by Profile photo of mhutton mhutton 1 year, 5 months ago.

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
  • #194141
    Profile photo of eurozone

    I am interested in natural rough diamonds ex Swiss or Germany.
    As well without papers.
    Only jewellery quality.High quality.
    Weight: minimum 5 carat each stone
    Color: D , E , F
    Clarity: FL , IF , VVS
    As well single big rough diamonds with 25 carats or much more.
    And natural fancy/colored diamonds , in pink , red , blue , green
    Payment after inspection in Swiss or German

    Profile photo of mhutton

    Hello eurozone … After reading your posting, I felt I should offer you some information on rough diamonds. I am a NAJA Appraiser with a specialty in rough diamonds. According to the Diamond Education College in Johannesburg, South Africa of which I am a graduate of their Rough Evaluation Course; their Rough Diamond Marking & Planning Course; and their Rough Diamond Cutting & Polishing Course … there is no rough diamond graded for Color above “G” and no rough diamond graded for Clarity above VS2. Here is the reasoning for this: One never knows what a diamond is going to do when it is sawed and hits the heat stress of the cutting wheel. Diamonds change clarity and color all the time when they hit the wheel. FL, IF, and VVS are GIA Clarity grades for POLISHED stones. This becomes apparent when one looks at the definition of VVS1. Only one minute pinpoint visible from the PAVILION side of the finished stone qualifies as a VVS1. Until the stone is laid out and cut, you don’t even know where the crown or the pavilion will be. Flawless (FL) means not only are there NO internal Clarity characteristics, but the Outside of the FINISHED stone has no polishing faults. So if a rough diamond has not been cut and polished … then it has many polishing faults all over its surface. I trust this information is useful to you. Michael in Las Vegas. 😀 http://www.thediamondgrader.com

Viewing 2 posts - 1 through 2 (of 2 total)

You must be logged in to reply to topics in this forum.

Take your love of gemstones
To a New Level
Search in radius 25 miles

Recent Community Posts

eNews Signup

Skip to toolbar