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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7551045067

Certificate GIA 7551045067

Diamond specifications and retailer prices

From $4,702 AUD
As of November 6, 2026
Save $5,238 AUD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,940 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J 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 7551045067. Listed at 15 retailers as of November 4, 2026, with prices from $4,702 to $9,940, a $5,238 spread on the same certified stone. MOH London lists it at $9,940. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551045067
Dimensions10.22 × 5.49 × 3.61 mm
L/W Ratio1.86
Girdle conditionFaceted
Top View
10.22 mm5.49 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551045067
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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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: $9,940 AUD|Low: $4,285 AUD|High: $10,086 AUD|Avg: $6,081 AUD|-1.4%
MOH London
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 7, 2026
Retailer 11$4,285 AUD
Retailer 7$4,295 AUD
Retailer 12$4,436 AUD
Retailer 20$4,702 AUD
Retailer 8$4,737 AUD
Retailer 3$5,162 AUD
Retailer 10$5,298 AUD
Retailer 21$5,322 AUD
Retailer 16$5,442 AUD
Retailer 19$5,606 AUD
Retailer 18$6,229 AUD
Retailer 2$6,399 AUD
Retailer 4$6,462 AUD
Retailer 5$6,462 AUD
Retailer 6$6,680 AUD
Retailer 15$6,705 AUD
Retailer 14$7,046 AUD
Retailer 13$7,060 AUD
Retailer 9$7,277 AUD
Retailer 17$9,136 AUD
MOH London$9,940 AUD

29 data points across 21 retailers

15 retailers$4,702 AUD to $9,940 AUD

Retailer 1
-
$4,285 AUD
Price last confirmed 66 days ago
B
Retailer 2
-
$4,702 AUD
View
B
Retailer 3
-
$5,162 AUD
View
B
Retailer 4
-
$5,322 AUD
View
B
Retailer 5
-
$5,442 AUD
View
B
Retailer 6
-
$5,606 AUD
View
B
Retailer 7
-
$6,229 AUD
View
B
Retailer 8
-
$6,399 AUD
View
B
Retailer 9
-
$6,462 AUD
View
B
Retailer 10
-
$6,462 AUD
View
B
Retailer 11
-
$6,680 AUD
View
B
Retailer 12
-
$6,705 AUD
View
B
Retailer 13
-
$7,060 AUD
View
B
Retailer 14
-
$9,136 AUD
View
Most Expensive
B
MOH London
1B08443EC · Nov 4
$9,940 AUD
£5,378 GBP
View
14 more retailers have this diamond
Prices start from $4,702 AUDSave up to $5,238 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.

B
1.20ct Marquise
$4,702 AUD