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Cushion|Natural|GIA

1.00ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6381887861

Certificate GIA 6381887861

Diamond specifications and retailer prices

From $3,315 AUD
As of November 6, 2026
Save $3,670 AUD (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $6,985 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6381887861. Listed at 23 retailers as of November 4, 2026, with prices from $3,315 to $6,985, a $3,670 spread on the same certified stone. MOH London lists it at $6,985. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6381887861
Dimensions6.27 × 5.44 × 3.71 mm
L/W Ratio1.15
Top View
6.27 mm5.44 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6381887861
Side View
Table 60.0%CrownGirdle: VTN-STKPavilionCulet: NoneDepth 68.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,985 AUD|Low: $2,918 AUD|High: $7,088 AUD|Avg: $4,348 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3$3,315 AUD
Retailer 10$3,347 AUD
Retailer 8$3,503 AUD
Retailer 4$3,748 AUD
Retailer 11$3,794 AUD
Retailer 12$4,120 AUD
Retailer 6$4,407 AUD
Retailer 9$4,692 AUD
Retailer 5$4,897 AUD
Retailer 7$5,111 AUD
Retailer 2$5,213 AUD
MOH London$6,985 AUD

45 data points across 12 retailers

23 retailers$3,315 AUD to $6,985 AUD

B
Cheapest Retailer
-
$3,315 AUD
Retailer 2
-
$3,347 AUD
View
Price last confirmed 10 days ago
B
Retailer 3
-
$3,398 AUD
View
B
Retailer 4
-
$3,411 AUD
View
B
Retailer 5
-
$3,503 AUD
View
Final sale: no returns
B
Retailer 6
-
$3,522 AUD
View
B
Retailer 7
-
$3,564 AUD
View
B
Retailer 8
-
$3,579 AUD
View
B
Retailer 9
-
$3,748 AUD
View
Retailer 10
-
$3,794 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$4,116 AUD
View
B
Retailer 12
-
$4,120 AUD
View
B
Retailer 13
-
$4,148 AUD
View
C
Retailer 14
-
$4,337 AUD
View
C
Retailer 15
-
$4,337 AUD
View
B
Retailer 16
-
$4,407 AUD
View
C
Retailer 17
-
$4,483 AUD
View
Retailer 18
-
$4,692 AUD
View
Price last confirmed 31 days ago
Retailer 19
-
$4,864 AUD
View
Price last confirmed 15 days ago
C
Retailer 20
-
$4,897 AUD
View
C
Retailer 21
-
$5,111 AUD
View
Retailer 22
-
$5,213 AUD
View
Most Expensive
C
MOH London
1B61C6405 · Nov 4
$6,985 AUD
£3,779 GBP
View
22 more retailers have this diamond
Prices start from $3,315 AUDSave up to $3,670 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.00ct Cushion
$3,315 AUD