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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6551490092

Certificate GIA 6551490092

Diamond specifications and retailer prices

From $3,576 AUD
As of November 6, 2026
Save $4,372 AUD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,948 AUD at MOH London · As of November 2, 2026
View at MOH London

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 6551490092. Listed at 16 retailers as of November 2, 2026, with prices from $3,576 to $7,948, a $4,372 spread on the same certified stone. MOH London lists it at $7,948. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551490092
Dimensions7.11 × 5.31 × 3.59 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.11 mm5.31 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6551490092
Side View
Table 68.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.7%

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: $7,948 AUD|Low: $3,557 AUD|High: $8,294 AUD|Avg: $5,125 AUD|-3.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$3,576 AUD
Retailer 2$3,742 AUD
Retailer 3$4,285 AUD
Retailer 9$4,308 AUD
Retailer 11$4,387 AUD
Retailer 7$4,889 AUD
Retailer 6$4,980 AUD
Retailer 12$5,094 AUD
Retailer 4$5,234 AUD
Retailer 5$5,533 AUD
Retailer 8$5,801 AUD
MOH London$7,948 AUD

31 data points across 12 retailers

16 retailers$3,576 AUD to $7,948 AUD

A
Cheapest Retailer
-
$3,576 AUD
A
Retailer 2
-
$3,742 AUD
View
B+
Retailer 3
-
$4,285 AUD
View
B+
Retailer 4
-
$4,308 AUD
View
B+
Retailer 5
-
$4,387 AUD
View
Final sale: no returns
B+
Retailer 6
-
$4,532 AUD
View
B+
Retailer 7
-
$4,534 AUD
View
B+
Retailer 8
-
$4,841 AUD
View
B+
Retailer 9
-
$4,889 AUD
View
Retailer 10
-
$4,900 AUD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
$4,980 AUD
View
B+
Retailer 12
-
$5,094 AUD
View
Retailer 13
-
$5,234 AUD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$5,533 AUD
View
B+
Retailer 15
-
$5,801 AUD
View
Most Expensive
B
MOH London
DDFA2EE84 · Nov 2
$7,948 AUD
£4,300 GBP
View
15 more retailers have this diamond
Prices start from $3,576 AUDSave up to $4,372 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
$3,576 AUD