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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6565379734

Certificate GIA 6565379734

Diamond specifications and retailer prices

From $4,810 AUD
$3,371 USD
As of November 2, 2026
Save $4,973 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,783 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

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 6565379734. Listed at 15 retailers as of November 2, 2026, with prices from $4,810 to $9,783, a $4,973 spread on the same certified stone. NZ Jewellers lists it at $9,783. 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
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565379734
Dimensions10.33 × 5.62 × 3.42 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Knot, Needle
Top View
10.33 mm5.62 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6565379734
Side View
Table 63.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $9,783 AUD|Low: $4,810 AUD|High: $9,783 AUD|Avg: $6,115 AUD
NZ Jewellers
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 3, 2026
Retailer 7$4,810 AUD
Retailer 11$4,880 AUD
Retailer 12$5,028 AUD
Retailer 15$5,344 AUD
Retailer 4$5,491 AUD
Retailer 10$5,586 AUD
Retailer 13$5,586 AUD
Retailer 2$5,800 AUD
Retailer 3$5,807 AUD
Retailer 5$5,807 AUD
Retailer 6$6,007 AUD
Retailer 8$6,249 AUD
Retailer 14$8,193 AUD
Retailer 9$9,391 AUD
NZ Jewellers$9,783 AUD

32 data points across 15 retailers

15 retailers$4,810 AUD to $9,783 AUD

B+
Cheapest Retailer
-
$4,810 AUD
$3,371 USD
B+
Retailer 2
-
$4,880 AUD
CA$4,750 CAD
View
B+
Retailer 3
-
$5,028 AUD
$3,524 USD
View
B
Retailer 4
-
$5,344 AUD
$3,745 USD
View
B
Retailer 5
-
$5,491 AUD
$3,848 USD
View
B
Retailer 6
-
$5,586 AUD
$3,915 USD
View
B
Retailer 7
-
$5,586 AUD
$3,915 USD
View
B
Retailer 8
-
$5,800 AUD
£3,200 GBP
View
B
Retailer 9
-
$5,807 AUD
$4,070 USD
View
B
Retailer 10
-
$5,807 AUD
$4,070 USD
View
B
Retailer 11
-
$6,007 AUD
$4,210 USD
View
B
Retailer 12
-
$6,249 AUD
€4,171 EUR
View
B
Retailer 13
-
$8,193 AUD
$5,742 USD
View
B
Retailer 14
-
$9,391 AUD
£5,182 GBP
View
Most Expensive
B
NZ Jewellers
617fe7ef-dabd-4410-8bcc-3b14343cc3c6 · Nov 3
$9,783 AUD
$6,856 USD
View
14 more retailers have this diamond
Prices start from $4,810 AUDSave up to $4,973 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
$4,810 AUD