Q...about SI clarity stones. truth or myth?

[Dancing Fire]

it is better to have inclusions near the edge instead of the table. asuming both stone are eye clean.

 

[strmrdr]

myth

eyeclean is eyeclean.

 

[Dancing Fire]

Date: 4/28/2009 9:32:16 PM
Author: strmrdr
myth

eyeclean is eyeclean.

for durability reasons...wouldn''t it be better to have the inclusions under the table?

 

[Garry H (Cut Nut)]

It is better not to have surface reaching inclusions - ones that break the surface at the crown or table (opens) - especially right on the table / crown edges as these can (very very rarely) break.

Other than that - 1/2 hour ago I examined a chipped old cut with a very very shallow crown - it is I1 with opens running across the table in 2 places and another near the girdle.
It did not chip on any of these supposed weak zones - it broke along a cleavage direction because of the shallow crown and thin girdle.

Other than that - if inclusions are not surface reaching there is more evidence to suggest they will have nothing to do with breakage than there is to indicate inclusions contribute to damage.

 

[Dancing Fire]

Date: 4/29/2009 2:25:21 AM
Author: Garry H (Cut Nut)
It is better not to have surface reaching inclusions - ones that break the surface at the crown or table (opens) - especially right on the table / crown edges as these can (very very rarely) break.

Other than that - 1/2 hour ago I examined a chipped old cut with a very very shallow crown - it is I1 with opens running across the table in 2 places and another near the girdle.
It did not chip on any of these supposed weak zones - it broke along a cleavage direction because of the shallow crown and thin girdle.

Other than that - if inclusions are not surface reaching there is more evidence to suggest they will have nothing to do with breakage than there is to indicate inclusions contribute to damage.

yes,i understand that,but if all the inclusions were below surface...does it matter where the inclusions are located if both stones were eye clean?

 

[Garry H (Cut Nut)]

Date: 4/29/2009 3:11:21 AM
Author: Dancing Fire
yes,i understand that,but if all the inclusions were below surface...does it matter where the inclusions are located if both stones were eye clean?

It is rare but happens that inclusions that meet the surface are associated with breakage.

It is totally unlikely that inclusions beneath the surface anywhere on the diamond are associated with damage

You have more chance of being hit by a train

 

[Lorelei]

Date: 4/29/2009 3:58:58 AM
Author: Garry H (Cut Nut)

Date: 4/29/2009 3:11:21 AM
Author: Dancing Fire
yes,i understand that,but if all the inclusions were below surface...does it matter where the inclusions are located if both stones were eye clean?

It is rare but happens that inclusions that meet the surface are associated with breakage.

It is totally unlikely that inclusions beneath the surface anywhere on the diamond are associated with damage

You have more chance of being hit by a train

Good info, thanks Garry!