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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 $6,967 NZD
As of November 6, 2026
Save $5,576 NZD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,543 NZD at MOH London · As of November 7, 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 6, 2026, with prices from $6,967 to $12,543, a $5,576 spread on the same certified stone. MOH London lists it at $12,543. 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: $12,543 NZD|Low: $6,927 NZD|High: $13,077 NZD|Avg: $8,652 NZD|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 9$6,967 NZD
Retailer 5$7,071 NZD
Retailer 7$7,154 NZD
Retailer 8$7,917 NZD
Retailer 6$8,444 NZD
Retailer 3$8,909 NZD
Retailer 2$9,020 NZD
Retailer 4$9,660 NZD
MOH London$12,543 NZD

45 data points across 9 retailers

9 retailers$6,967 NZD to $12,543 NZD

B
Cheapest Retailer
-
$6,967 NZD
Retailer 2
-
$7,071 NZD
View
Price last confirmed 10 days ago
B
Retailer 3
-
$7,154 NZD
View
Retailer 4
-
$7,917 NZD
View
Price last confirmed 9 days ago
Retailer 5
-
$8,444 NZD
View
Price last confirmed 29 days ago
B
Retailer 6
-
$8,909 NZD
View
B
Retailer 7
-
$9,020 NZD
View
B
Retailer 8
-
$9,660 NZD
View
Most Expensive
B
MOH London
1B5FC5FE1 · Nov 7
$12,543 NZD
£5,475 GBP
View
8 more retailers have this diamond
Prices start from $6,967 NZDSave up to $5,576 NZD

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
$6,967 NZD