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Cushion|Natural|GIA

1.23ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6291665728

Certificate GIA 6291665728

Diamond specifications and retailer prices

From $4,950 SGD
As of November 6, 2026
Save $3,986 SGD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,936 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural cushion diamond

This 1.23ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6291665728. Listed at 9 retailers as of November 4, 2026, with prices from $4,950 to $8,936, a $3,986 spread on the same certified stone. MOH London lists it at $8,936. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.23
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6291665728
Dimensions6.13 × 5.85 × 3.94 mm
L/W Ratio1.05
Top View
6.13 mm5.85 mm1.23 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6291665728
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.3%

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: $8,936 SGD|Low: $4,921 SGD|High: $9,291 SGD|Avg: $6,147 SGD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 9$4,950 SGD
Retailer 5$5,024 SGD
Retailer 7$5,083 SGD
Retailer 8$5,625 SGD
Retailer 6$5,999 SGD
Retailer 3$6,330 SGD
Retailer 2$6,408 SGD
Retailer 4$6,863 SGD
MOH London$8,936 SGD

45 data points across 9 retailers

9 retailers$4,950 SGD to $8,936 SGD

B
Cheapest Retailer
-
$4,950 SGD
Retailer 2
-
$5,024 SGD
View
Price last confirmed 10 days ago
B
Retailer 3
-
$5,083 SGD
View
Retailer 4
-
$5,625 SGD
View
Price last confirmed 9 days ago
Retailer 5
-
$5,999 SGD
View
Price last confirmed 29 days ago
B
Retailer 6
-
$6,330 SGD
View
B
Retailer 7
-
$6,408 SGD
View
B
Retailer 8
-
$6,863 SGD
View
Most Expensive
B
MOH London
1B5FC5FE1 · Nov 4
$8,936 SGD
£5,490 GBP
View
8 more retailers have this diamond
Prices start from $4,950 SGDSave up to $3,986 SGD

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
1.23ct Cushion
$4,950 SGD