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Cushion|Natural|GIA

1.23ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 6545684900

Certificate GIA 6545684900

Diamond specifications and retailer prices

From $3,577 NZD
As of November 6, 2026
Save $4,261 NZD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,966 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.23ct natural cushion diamond

This 1.23ct natural cushion sits in the classic one-carat band, graded G 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 6545684900. Listed at 13 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545684900
Dimensions6.22 × 5.77 × 3.73 mm
L/W Ratio1.08
Top View
6.22 mm5.77 mm1.23 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545684900
Side View
Table 69.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,966 NZD|Low: $3,577 NZD|High: $9,989 NZD|Avg: $5,374 NZD|+3.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2$3,577 NZD
Retailer 13$4,142 NZD
Retailer 5$4,243 NZD
Retailer 8$4,243 NZD
Retailer 4$4,347 NZD
Retailer 3$4,517 NZD
Retailer 12$4,739 NZD
Retailer 9$4,746 NZD
Retailer 11$4,871 NZD
Retailer 7$5,475 NZD
Retailer 6$5,572 NZD
Retailer 10$7,838 NZD
Queensmith$9,966 NZD

24 data points across 13 retailers

13 retailers$3,577 NZD to $7,838 NZD

A
Cheapest Retailer
-
$3,577 NZD
A
Retailer 2
-
$4,142 NZD
View
Final sale: no returns
A
Retailer 3
-
$4,243 NZD
View
A
Retailer 4
-
$4,243 NZD
View
A
Retailer 5
-
$4,347 NZD
View
Retailer 6
-
$4,517 NZD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$4,739 NZD
View
A
Retailer 8
-
$4,746 NZD
View
B+
Retailer 9
-
$4,871 NZD
View
B+
Retailer 10
-
$5,475 NZD
View
B+
Retailer 11
-
$5,572 NZD
View
B
Retailer 12
-
$7,838 NZD
View
Most Expensive
Queensmith
6545684900 · Oct 28
$9,966 NZD
£4,350 GBP
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $3,577 NZDSave up to $4,261 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.

A
1.23ct Cushion
$3,577 NZD