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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 $2,886 AUD
As of November 6, 2026
Save $3,438 AUD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,040 AUD 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: $8,040 AUD|Low: $2,886 AUD|High: $8,059 AUD|Avg: $4,331 AUD|+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 7, 2026
Retailer 7$2,886 AUD
Retailer 3$3,342 AUD
Retailer 5$3,423 AUD
Retailer 10$3,423 AUD
Retailer 6$3,486 AUD
Retailer 4$3,644 AUD
Retailer 13$3,823 AUD
Retailer 2$3,829 AUD
Retailer 12$3,930 AUD
Retailer 9$4,417 AUD
Retailer 8$4,496 AUD
Retailer 11$6,324 AUD
Queensmith$8,040 AUD

25 data points across 13 retailers

13 retailers$2,886 AUD to $6,324 AUD

A
Cheapest Retailer
-
$2,886 AUD
A
Retailer 2
-
$3,342 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,423 AUD
View
A
Retailer 4
-
$3,423 AUD
View
A
Retailer 5
-
$3,486 AUD
View
Retailer 6
-
$3,644 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$3,823 AUD
View
A
Retailer 8
-
$3,829 AUD
View
B+
Retailer 9
-
$3,930 AUD
View
B+
Retailer 10
-
$4,417 AUD
View
B+
Retailer 11
-
$4,496 AUD
View
B
Retailer 12
-
$6,324 AUD
View
Most Expensive
Queensmith
6545684900 · Oct 28
$8,040 AUD
£4,350 GBP
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $2,886 AUDSave up to $3,438 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.

A
1.23ct Cushion
$2,886 AUD