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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 7551357788

Certificate GIA 7551357788

Diamond specifications and retailer prices

From $4,247 AUD
As of November 6, 2026
Save $5,177 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,667 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551357788. Listed at 19 retailers as of November 2, 2026, with a 122% 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551357788
Dimensions7.10 × 5.40 × 3.70 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Natural
Top View
7.10 mm5.40 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551357788
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.4%

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: $9,667 AUD|Low: $4,209 AUD|High: $9,852 AUD|Avg: $6,259 AUD|+1.0%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 15$4,247 AUD
Retailer 2$4,420 AUD
Retailer 6$5,068 AUD
Retailer 13$5,142 AUD
Retailer 5$5,202 AUD
Retailer 10$5,360 AUD
Retailer 8$5,466 AUD
Retailer 3$5,635 AUD
Retailer 11$5,708 AUD
Retailer 4$5,848 AUD
Retailer 7$6,018 AUD
Retailer 9$6,561 AUD
Retailer 12$6,878 AUD
Retailer 14$9,424 AUD
Queensmith$9,667 AUD

24 data points across 15 retailers

19 retailers$4,247 AUD to $9,424 AUD

A
Cheapest Retailer
-
$4,247 AUD
A
Retailer 2
-
$4,420 AUD
View
B+
Retailer 3
-
$5,068 AUD
View
B+
Retailer 4
-
$5,142 AUD
View
B+
Retailer 5
-
$5,202 AUD
View
Final sale: no returns
B+
Retailer 6
-
$5,360 AUD
View
B
Retailer 7
-
$5,365 AUD
View
B
Retailer 8
-
$5,370 AUD
View
B+
Retailer 9
-
$5,466 AUD
View
Retailer 10
-
$5,635 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$5,702 AUD
View
B+
Retailer 12
-
$5,708 AUD
View
B+
Retailer 13
-
$5,848 AUD
View
B+
Retailer 14
-
$6,018 AUD
View
Retailer 15
-
$6,263 AUD
View
Price last confirmed 34 days ago
B
Retailer 16
-
$6,561 AUD
View
B
Retailer 17
-
$6,878 AUD
View
B
Retailer 18
-
$9,424 AUD
View
Most Expensive
Queensmith
7551357788 · Oct 28
$9,667 AUD
£5,230 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $4,247 AUDSave up to $5,177 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
1.20ct Cushion
$4,247 AUD