DIAMOND & DIAMOND
GRADING EXAM WITH
100% CORRECT
ANSWERS
Abrasionm(Abr)m-mcorrectmanswer-
Amseriesmofmminutemnicksmalongmthemfacetmjunctionsmofmamfashionedmdiamond;mgi
vesmthemedgesmamwhitemormfuzzymappearance.m(Assignmentm10)
Adamantinemlusterm-mcorrectmanswer-
Themhighestmdegreemofmlustermpossibleminmamtransparentmmaterial.m(Assignmentm8
)
Aggregatem-mcorrectmanswer-
Amsolidmmassmofmindividual,mrandomlymorientedmcrystals,mintergrownmormheldmtoget
hermbymamnaturalmbindingmagent.m(Assignmentm7)
,Alluvialmdepositm-mcorrectmanswer-
Amdepositmwheremgemsmaremerodedmfrommtheirmsourcemrock,mthenmtransportedma
waymfrommthemsourcemandmfurthermconcentrated.m(Assignmentm5)
Anglemofmincidencem-mcorrectmanswer-
Themanglematmwhichmamraymofmlightmstrikesmamsurface,mmeasuredmfrommthemnorm
al.m(Assignmentm8)
Anglemofmreflectionm-mcorrectmanswer-
Themanglembetweenmthemnormalmandmamreflectedmraymofmlight.m(Assignmentm8)
Annealingm-mcorrectmanswer-
Usingmheatmtomstabilizemirradiatedmcolorminmgemstones.m(Assignmentm12)
Appraisalm-mcorrectmanswer-
Anmestimationmofmthemvaluemofmanmarticle,musuallymforminsurancempurposes.m(Assi
gnmentm1)
Averagemgirdlemdiameterm-mcorrectmanswer-
Themresultmachievedmbymaddingmthemsmallestmandmlargestmgirdlemmeasurementsm
ofmamroundmbrilliantmandmdividingmbymtwo.m(Assignmentm14)
Bastm-mcorrectmanswer-Frostedmroughmdiamond.m"Bark"minmDutch.m(Assignmentm9)
BeardedmGirdlem(BG)m-mcorrectmanswer-
Verymsmallmfeathersmthatmextendmfrommthemgirdlemsurfacemintomthemstone;mcanmre
sultmfrommthemcuttingmprocess.m(Assignmentm10)
Bellym-mcorrectmanswer-
Themslightlymcurvingmcentermofmthemlongmsidemofmampear,mmarquise,mheart,mormov
al.m(Assignmentm16)
Beneficiationm-mcorrectmanswer-
Amcommitmentmtomreservemamportionmofmthemresourcesmderivedmfrommanymcountry
mformthemeconomicmdevelopmentmofmthatmcountry.m(Assignmentm3)
BestmPracticesmPrinciplesm(BPP)m-mcorrectmanswer-
DemBeers'mformalizedmcommitmentmofmitselfmandmitsmsightholdersmtomthemhighestm
ethicalmstandards.m(Assignmentm3)
Blemishm-mcorrectmanswer-
Claritymcharacteristicmthat'smconfinedmtomthemsurfacemofmampolishedmgemstone.m(A
ssignmentm10)
Blockmcavingm-mcorrectmanswer-
Undergroundmminingmthatminvolvesmbuildingmamconcrete-
linedmtunnelmundermanmoremdeposit,mthenmcollectingmthemoremthroughmopeningsmin
mthemliner.m(Assignmentm6)
,Blockingm-mcorrectmanswer-
Placingmthemfirstm17morm18mfacetsmonmamdiamond.m(Assignmentm9)
Bow-tiem-mcorrectmanswer-
Amdarkmareamacrossmthemcentermofmanmelongatedmbrilliantmcut.m(Assignmentm16)
Brick-and-mortarmretailerm-mcorrectmanswer-
Amtraditionalmstoremconsistingmofmwallsmandmamfixedmlocation.m(Assignmentm3)
Brightnessm-mcorrectmanswer-
Themeffectmofmallmthemdiamond'sminternalmandmexternalmreflectionsmofmwhitemlight.m
(Assignmentm8)
Brilliantmcutm-mcorrectmanswer-Amcuttingmstyleminmwhichmtriangularmandmkite-
shapedmfacetsmradiatemfrommamgem'smcentermtowardmitsmgirdle.m(Assignmentm16)
Brillianteeringm-mcorrectmanswer-
Placementmandmpolishingmofmthemstarmandmuppermandmlowermgirdlemfacets.m(Assig
nmentm9)
Bruisem(Br)m-mcorrectmanswer-
Amtinymareamofmimpactmaccompaniedmbymverymsmall,mroot-
likemfeathersmvisiblematm10Xmmagnification;mtypicallymoccursmatmamfacetmjunction.m(
Assignmentm10)
Brutingm-mcorrectmanswer-Formingmthembasicmface-
upmoutlinemofmamdiamondmtompreparemitmformfaceting.m(Assignmentm9)
Bulkmsamplingm-mcorrectmanswer-Large-scalemcharactermsampling.m(Assignmentm5)
BurnmMarksm(Brn)m-mcorrectmanswer-
Hazymsurfacemareasmthatmresultmfrommexcessivemheatmormfrommunevenmpolishingm
causedmbymstructuralmirregularities;malsomcalledmpolishmmarksmormburnedmfacets.m(
Assignmentm10)
Cavitym(Cv)m-mcorrectmanswer-
Anmangularmopeningmcreatedmwhenmpartmofmamfeathermbreaksmaway.m(Assignment
m10)
CentralmSellingmOrganisationm(CSO)m-mcorrectmanswer-
Anmagencymdesignedmtompurchase,msort,mevaluate,mandmsellmroughmdiamonds.m(A
ssignmentm2)
Charactermsamplingm-mcorrectmanswer-
Testingmformthemsize,mshape,mclarity,mandmcolormofmthemdiamondsminmamdeposit.m(
Assignmentm5)
Characteristicmcolorm-mcorrectmanswer-Thembasicmcolormofmamfancy-
coloredmdiamond.m(Assignmentm13)
, Chemicalmvapormdepositionm(CVD)m-mcorrectmanswer-
Anmindustrialmprocessmadaptedmtomallowmgrowthmofmsyntheticmdiamondmfrommcarb
on-richmgasminmthinmlayersmontomamsiliconmormdiamondmsurface.m(Assignmentm19)
Chipm(Ch)m-mcorrectmanswer-
Amshallowmopeningmcausedmbymdamagemtomthemstone'smsurface;mtypicallymoccursm
atmamgirdlemedge,mfacetmjunction,mormculet.m(Assignmentm10)
Claritymcharacteristicm-mcorrectmanswer-
Internalmormexternalmfeaturemofmamgemstonemthatmhelpsmdeterminemitsmqualitymand
mestablishmitsmidentity.m(Assignmentm10)
Cleavagem(Cl)m-mcorrectmanswer-
Large,msevere,mstraightmbreakmalongmamplanemofmatomicmweakness;mconsideredma
nminclusion.m(Assignmentm10)
Cleavagemplanem-mcorrectmanswer-
Planemparallelmtomampossiblemcrystalmface,mwheremamdiamondmcanmsplitmcleanlymw
henmstruck.m(Assignmentm7)
Cleaverm-mcorrectmanswer-
Ampersonmwhomcleaves,mormsplits,mamdiamondmalongmamcleavagemplane.mThemclea
vermmightmalsombemresponsiblemformplanningmthemfashioningmofmampolishedmgem.m
(Assignmentm9)
Cleavingm-mcorrectmanswer-
Dividingmamdiamondmintomtwomormmorempiecesmalongmamcleavagemplane.m(Assign
mentm9)
Cloudm(Cld)m-mcorrectmanswer-
Manymtightlymgroupedmpinpointsmthatmmightmbemtoomsmallmtomdistinguishmindividual
lymatm10Xmbutmtogethermhavemamhazymappearance.m(Assignmentm10)
Colormcenterm-mcorrectmanswer-
Structuralmdefectmthatminfluencesmanmobject'smabsorptionmofmlightmandmcanmcausem
itsmcolor.m(Assignmentm12)
Conflictmdiamondsm-mcorrectmanswer-
Diamondsmusedmtomfinancemviolencemandmterror.m(Assignmentm3)
Consignmentm-mcorrectmanswer-
Amselectionmofmgoodsmloanedmtomamdealermbymanothermwholesalermormmanufactur
er.m(Assignmentm20)
Corem-mcorrectmanswer-Earth'sminnermostmlayer.m(Assignmentm4)
Covalentmbondm-mcorrectmanswer-
Amchemicalmbondmformedmbymtwomatomsmsharingmelectrons.m(Assignmentm7)
GRADING EXAM WITH
100% CORRECT
ANSWERS
Abrasionm(Abr)m-mcorrectmanswer-
Amseriesmofmminutemnicksmalongmthemfacetmjunctionsmofmamfashionedmdiamond;mgi
vesmthemedgesmamwhitemormfuzzymappearance.m(Assignmentm10)
Adamantinemlusterm-mcorrectmanswer-
Themhighestmdegreemofmlustermpossibleminmamtransparentmmaterial.m(Assignmentm8
)
Aggregatem-mcorrectmanswer-
Amsolidmmassmofmindividual,mrandomlymorientedmcrystals,mintergrownmormheldmtoget
hermbymamnaturalmbindingmagent.m(Assignmentm7)
,Alluvialmdepositm-mcorrectmanswer-
Amdepositmwheremgemsmaremerodedmfrommtheirmsourcemrock,mthenmtransportedma
waymfrommthemsourcemandmfurthermconcentrated.m(Assignmentm5)
Anglemofmincidencem-mcorrectmanswer-
Themanglematmwhichmamraymofmlightmstrikesmamsurface,mmeasuredmfrommthemnorm
al.m(Assignmentm8)
Anglemofmreflectionm-mcorrectmanswer-
Themanglembetweenmthemnormalmandmamreflectedmraymofmlight.m(Assignmentm8)
Annealingm-mcorrectmanswer-
Usingmheatmtomstabilizemirradiatedmcolorminmgemstones.m(Assignmentm12)
Appraisalm-mcorrectmanswer-
Anmestimationmofmthemvaluemofmanmarticle,musuallymforminsurancempurposes.m(Assi
gnmentm1)
Averagemgirdlemdiameterm-mcorrectmanswer-
Themresultmachievedmbymaddingmthemsmallestmandmlargestmgirdlemmeasurementsm
ofmamroundmbrilliantmandmdividingmbymtwo.m(Assignmentm14)
Bastm-mcorrectmanswer-Frostedmroughmdiamond.m"Bark"minmDutch.m(Assignmentm9)
BeardedmGirdlem(BG)m-mcorrectmanswer-
Verymsmallmfeathersmthatmextendmfrommthemgirdlemsurfacemintomthemstone;mcanmre
sultmfrommthemcuttingmprocess.m(Assignmentm10)
Bellym-mcorrectmanswer-
Themslightlymcurvingmcentermofmthemlongmsidemofmampear,mmarquise,mheart,mormov
al.m(Assignmentm16)
Beneficiationm-mcorrectmanswer-
Amcommitmentmtomreservemamportionmofmthemresourcesmderivedmfrommanymcountry
mformthemeconomicmdevelopmentmofmthatmcountry.m(Assignmentm3)
BestmPracticesmPrinciplesm(BPP)m-mcorrectmanswer-
DemBeers'mformalizedmcommitmentmofmitselfmandmitsmsightholdersmtomthemhighestm
ethicalmstandards.m(Assignmentm3)
Blemishm-mcorrectmanswer-
Claritymcharacteristicmthat'smconfinedmtomthemsurfacemofmampolishedmgemstone.m(A
ssignmentm10)
Blockmcavingm-mcorrectmanswer-
Undergroundmminingmthatminvolvesmbuildingmamconcrete-
linedmtunnelmundermanmoremdeposit,mthenmcollectingmthemoremthroughmopeningsmin
mthemliner.m(Assignmentm6)
,Blockingm-mcorrectmanswer-
Placingmthemfirstm17morm18mfacetsmonmamdiamond.m(Assignmentm9)
Bow-tiem-mcorrectmanswer-
Amdarkmareamacrossmthemcentermofmanmelongatedmbrilliantmcut.m(Assignmentm16)
Brick-and-mortarmretailerm-mcorrectmanswer-
Amtraditionalmstoremconsistingmofmwallsmandmamfixedmlocation.m(Assignmentm3)
Brightnessm-mcorrectmanswer-
Themeffectmofmallmthemdiamond'sminternalmandmexternalmreflectionsmofmwhitemlight.m
(Assignmentm8)
Brilliantmcutm-mcorrectmanswer-Amcuttingmstyleminmwhichmtriangularmandmkite-
shapedmfacetsmradiatemfrommamgem'smcentermtowardmitsmgirdle.m(Assignmentm16)
Brillianteeringm-mcorrectmanswer-
Placementmandmpolishingmofmthemstarmandmuppermandmlowermgirdlemfacets.m(Assig
nmentm9)
Bruisem(Br)m-mcorrectmanswer-
Amtinymareamofmimpactmaccompaniedmbymverymsmall,mroot-
likemfeathersmvisiblematm10Xmmagnification;mtypicallymoccursmatmamfacetmjunction.m(
Assignmentm10)
Brutingm-mcorrectmanswer-Formingmthembasicmface-
upmoutlinemofmamdiamondmtompreparemitmformfaceting.m(Assignmentm9)
Bulkmsamplingm-mcorrectmanswer-Large-scalemcharactermsampling.m(Assignmentm5)
BurnmMarksm(Brn)m-mcorrectmanswer-
Hazymsurfacemareasmthatmresultmfrommexcessivemheatmormfrommunevenmpolishingm
causedmbymstructuralmirregularities;malsomcalledmpolishmmarksmormburnedmfacets.m(
Assignmentm10)
Cavitym(Cv)m-mcorrectmanswer-
Anmangularmopeningmcreatedmwhenmpartmofmamfeathermbreaksmaway.m(Assignment
m10)
CentralmSellingmOrganisationm(CSO)m-mcorrectmanswer-
Anmagencymdesignedmtompurchase,msort,mevaluate,mandmsellmroughmdiamonds.m(A
ssignmentm2)
Charactermsamplingm-mcorrectmanswer-
Testingmformthemsize,mshape,mclarity,mandmcolormofmthemdiamondsminmamdeposit.m(
Assignmentm5)
Characteristicmcolorm-mcorrectmanswer-Thembasicmcolormofmamfancy-
coloredmdiamond.m(Assignmentm13)
, Chemicalmvapormdepositionm(CVD)m-mcorrectmanswer-
Anmindustrialmprocessmadaptedmtomallowmgrowthmofmsyntheticmdiamondmfrommcarb
on-richmgasminmthinmlayersmontomamsiliconmormdiamondmsurface.m(Assignmentm19)
Chipm(Ch)m-mcorrectmanswer-
Amshallowmopeningmcausedmbymdamagemtomthemstone'smsurface;mtypicallymoccursm
atmamgirdlemedge,mfacetmjunction,mormculet.m(Assignmentm10)
Claritymcharacteristicm-mcorrectmanswer-
Internalmormexternalmfeaturemofmamgemstonemthatmhelpsmdeterminemitsmqualitymand
mestablishmitsmidentity.m(Assignmentm10)
Cleavagem(Cl)m-mcorrectmanswer-
Large,msevere,mstraightmbreakmalongmamplanemofmatomicmweakness;mconsideredma
nminclusion.m(Assignmentm10)
Cleavagemplanem-mcorrectmanswer-
Planemparallelmtomampossiblemcrystalmface,mwheremamdiamondmcanmsplitmcleanlymw
henmstruck.m(Assignmentm7)
Cleaverm-mcorrectmanswer-
Ampersonmwhomcleaves,mormsplits,mamdiamondmalongmamcleavagemplane.mThemclea
vermmightmalsombemresponsiblemformplanningmthemfashioningmofmampolishedmgem.m
(Assignmentm9)
Cleavingm-mcorrectmanswer-
Dividingmamdiamondmintomtwomormmorempiecesmalongmamcleavagemplane.m(Assign
mentm9)
Cloudm(Cld)m-mcorrectmanswer-
Manymtightlymgroupedmpinpointsmthatmmightmbemtoomsmallmtomdistinguishmindividual
lymatm10Xmbutmtogethermhavemamhazymappearance.m(Assignmentm10)
Colormcenterm-mcorrectmanswer-
Structuralmdefectmthatminfluencesmanmobject'smabsorptionmofmlightmandmcanmcausem
itsmcolor.m(Assignmentm12)
Conflictmdiamondsm-mcorrectmanswer-
Diamondsmusedmtomfinancemviolencemandmterror.m(Assignmentm3)
Consignmentm-mcorrectmanswer-
Amselectionmofmgoodsmloanedmtomamdealermbymanothermwholesalermormmanufactur
er.m(Assignmentm20)
Corem-mcorrectmanswer-Earth'sminnermostmlayer.m(Assignmentm4)
Covalentmbondm-mcorrectmanswer-
Amchemicalmbondmformedmbymtwomatomsmsharingmelectrons.m(Assignmentm7)
