Lustre of a diamond

[NickPana]

Hello everyone,

Wondering if someone can explain if lustre of a diamond is determined by the cut or is it something that that a particular stone possess regardless of cut?

Looking to purchase the stone (details below). Should I be worried that the lustre is M2 (Milky 2) ?





Many thanks,
NP

 

[gm89uk]

This diamond seems to have pretty good proportions. It's almost certainly M2 (milky) because it's an SI2 with cloud as the primary inclusion.

 

[NickPana]

Thanks for the response...

Sorry I'm new to the diamond world so excuse the silly question...Does that then mean fire, scintillation and brilliance will be compromised because of the milky appearance ?

 

[ringo865]

Probably. Think of shining a flashlight thru a glass of water. Now pour a thimblefull of milk into your glass and shine the flashlight through. Can you tell any difference?

Do you have a budget and desired specs for this stone in mind? People here love to help. They can find non-milky stones in your budget. You can learn about different characteristics of diamonds, possibly ger to decide where to make compromises. Most here will not compromise on cut. You're already looking at SI2, but there are less critical inclusions within that grade. You can drop down in color (if you really cannot tell comparing GIA or AGS graded stones).

 

[NickPana]

Thanks for the feedback...Stay away from milky diamonds I will.

Hoping to find round brilliant .40 (or close) that is ex cut, colourless and a budget of 800 AUD. It's actually a present and won't be set into jewelry.

Never shopped online but and I'm finding loose diamonds are far cheaper than in shops. I am researching but just unsure what the best buys are with such a small budget.

Any advice with what to look for or stay away from (no milky) would be great ?

Thanks again.

 

[rockysalamander]

A nice ACA for $650 usd (I think that works when converted).

https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-3055254.htm

 

[NickPana]

Wow ! Looks amazing !

Thanks !!

 

[Garry H (Cut Nut)]

The M2 is a grading system developed by an Indian diamond cutting firm called Venus Jewel.
An ethical and honest firm.
GIA by comparison are as crooked as it comes because they do not warn you this stone is very dull. They conceal valuable information with jargon. M2 on the Venus scale is about the fifth grade from the best, and very close to the very bottom

 

[Dancing Fire]

The M2 is a grading system developed by an Indian diamond cutting firm called Venus Jewel.
An ethical and honest firm.
GIA by comparison are as crooked as it comes because they do not warn you this stone is very dull. They conceal valuable information with jargon. M2 on the Venus scale is about the fifth grade from the best, and very close to the very bottom

Garry
No fluor on this stone, but milky? what other reasons can cause the milky like appearance? greyish undertone?

 

[Garry H (Cut Nut)]

Clouds are way more common a problem than fluoro milkyness

 

[Snowdrop13]

"Lustre" seems a funny word to describe a diamond, though, I've heard it used for pearls before. I looked up the definition and it means "a soft sheen or glow"......

 

[valeria101]

Clouds are way more common a problem than fluoro milkyness

I understand clouds / grain / other lattice defects of the right scale - fogging diamonds, but, what does fluorescence have to do with them at all ?


[I know chalk crystallization, C not so much]