Find your diamond
Find your jewelry
shape
carat
color
clarity

Diamond Scratched Diamond?

Status
Not open for further replies. Please create a new topic or request for this thread to be opened.

sugarplum

Brilliant_Rock
Joined
Jun 11, 2007
Messages
693
how easy is it for a diamond to get scratched by another diamond? my sister was looking at loose stones and held a stone (secured with tweezers) above her engagement ring to check out the size difference and she felt the two stones make contact. she said the culet of the loose stone may have grazed/rubbed her ering diamond as she was positioning the loose stone above her ering. she freaked out and thought she saw scratches on her diamond with a loupe (her ring was just cleaned so we don''t think it was dirt or lint) but after cleaning it again and checking it out muliple times, she didn''t see anything abnormal.

would it be unlikely for a diamond to scratch another diamond that way? or are diamonds very easily scratched by other diamonds and a light graze or rub will result in scratches? maybe she did see scratches but they''re so light/minor that they''re hard to find even with a loupe?
 

Stone-cold11

Super_Ideal_Rock
Joined
Sep 9, 2008
Messages
14,069
Err... that is how they cut diamonds in the old days, with other diamonds. So I would say it is possible to scratch diamonds with diamonds but also depends on the force applied at the contact. A light contact is unlikely to cause damage.
 

sugarplum

Brilliant_Rock
Joined
Jun 11, 2007
Messages
693
yeah, i''m wonderding how much force/pressure needs to be applied for a diamond to scratch up another diamond.
 

musey

Super_Ideal_Rock
Joined
Sep 30, 2006
Messages
11,242
I could be wrong, but I don''t think it takes much. I have read on PS in the past that just storing diamonds loosely together (like in a jewelry bag) can lead to scratching.
 

strmrdr

Super_Ideal_Rock
Joined
Nov 1, 2003
Messages
23,295
doing this you would be more likely to break the culet of the top diamond before scratching the bottom one in my opinion but stranger things have happened.
 

sugarplum

Brilliant_Rock
Joined
Jun 11, 2007
Messages
693
do you think it''s possible my sister''s stone could have survived the contact unscathed? she and i have louped the stone and don''t see any scratches...i''m wondering how obvious they''d be though from grazing.
 

strmrdr

Super_Ideal_Rock
Joined
Nov 1, 2003
Messages
23,295
Date: 2/18/2009 8:01:20 PM
Author: coatimundi
If you loupe it in reflected light and don''t see scratches, you''re probably fine.
ditto
 

Circe

Ideal_Rock
Trade
Joined
Apr 26, 2007
Messages
8,087
I''d bet she just saw a tiny bit of oil/dirt atop the stone: even if it had just been cleaned, it''s quite possible for it to have brushed against her finger on her hand. If you don''t see anything under the loupe with sustained viewing, don''t fret yourselves. Next time, you''ll be extra-cautious, but, honestly, it doesn''t sound like it was a huge risk to start with.
 

Lorelei

Super_Ideal_Rock
Premium
Joined
Apr 30, 2005
Messages
42,064
Date: 2/18/2009 11:01:41 PM
Author: strmrdr

Date: 2/18/2009 8:01:20 PM
Author: coatimundi
If you loupe it in reflected light and don''t see scratches, you''re probably fine.
ditto
Thritto
 

Garry H (Cut Nut)

Super_Ideal_Rock
Trade
Joined
Aug 15, 2000
Messages
15,426
On the table of a diamond there are generally 4 defined directions you can scratch a diamond and 4 where it is next to impossible (= less than 50% chance) but the same probability applies to the culet - it has soft and hard directions.

So eve if you tried very hard and pushed very hard - there is about 1:10 chance you could achieve a scratch if you wanted to
 

sugarplum

Brilliant_Rock
Joined
Jun 11, 2007
Messages
693
thanks everyone. that''ll help ease her mind! there wasn''t any hard contact/pushing so if it''s a 1:10 chance with doing that then i''m pretty sure her diamond didn''t get scratched up by some light grazing/rubbing.

she was saying " it can''t be thaaat easy to scratch right??" poor thing was having a panic attack. i can''t say much though because i''d be just as frantic if i though my diamond got scratched up! will loupe (10x) again in reflected light.

if we put the ring under a microscope and don''t see any scratches, we can be pretty darn sure there aren''t any right?


garry- just curious, which directions would those be? is there a higher probabilty of scratching up the crown/kite facets?
 

cofor

Shiny_Rock
Joined
Jan 7, 2009
Messages
132
The "soft" and "hard" directions in a cut diamond depends on what type of crystal was used to start with, how it is oriented and if it is twinned or not. Assuming a untwinned octahedron has been used to produce a round brilliant four of the bezels and four of the pavillion mains are the "softest" if you scratch sideways and not in a up-down" way.
I have bruted rough by hand. That is when you have one diamond as "grinder" acting on another to preform rough. That is hard work with quite high amount of pressure put on the pieces. Scratching the table facet of a mounted stone by letting the culet from a second diamond rest on top of it is most unlikely. Unless the mounted stone is for instance a CZ or other simulant which I assume it was not in this case.

Conny
 

sugarplum

Brilliant_Rock
Joined
Jun 11, 2007
Messages
693
thanks conny. i''ll tell my sister she can relax. there was definitely contact between the two stones as they briefly brushed against each other back and forth (she was trying to position/steady the loose stone above her ering) but she didn''t exert any extreme force or pressure so by the info on this thread and not seeing any scratches through a 10x loupe, i think it''s safe to say her stone was unharmed.
 
Status
Not open for further replies. Please create a new topic or request for this thread to be opened.
Be a part of the community It's free, join today!
    A 1.7ct Upgrade For A 17th Anniversary
    A 1.7ct Upgrade For A 17th Anniversary
    A Classic Solitaire
    A Classic Solitaire
    August Birthstones: Peridot And Sardonyx
    August Birthstones: Peridot And Sardonyx

Need Something Special?

Get a quote from multiple trusted and vetted jewelers.

Holloway Cut Advisor



Diamond Eye Candy

Click to view full-size image.
Top