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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6555703280

Certificate GIA 6555703280

Diamond specifications and retailer prices

From $4,486 AUD
₹299,403 INR
As of November 3, 2026
Save $5,915 AUD (57%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $10,401 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 6555703280. Listed at 23 retailers as of November 3, 2026, with prices from $4,486 to $10,401, a $5,915 spread on the same certified stone. NZ Jewellers lists it at $10,401. 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 6555703280
Dimensions10.70 × 5.36 × 3.42 mm
L/W Ratio2.00
Top View
10.70 mm5.36 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555703280
Side View
Table 58.0%CrownGirdle: STK-XTKPavilionCulet: NoneDepth 63.9%

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 3
Current: $10,401 AUD|Low: $4,486 AUD|High: $10,401 AUD|Avg: $6,333 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 3, 2026
Retailer 2$4,486 AUD
Retailer 9$5,097 AUD
Retailer 7$5,254 AUD
Retailer 12$5,294 AUD
Retailer 3$5,344 AUD
Retailer 15$5,466 AUD
Retailer 6$5,511 AUD
Retailer 8$5,679 AUD
Retailer 17$5,823 AUD
Retailer 21$5,970 AUD
Retailer 22$5,970 AUD
Retailer 23$5,970 AUD
Retailer 13$6,107 AUD
Retailer 11$6,181 AUD
Retailer 14$6,334 AUD
Retailer 10$6,401 AUD
Retailer 16$6,474 AUD
Retailer 18$6,756 AUD
Retailer 4$6,888 AUD
Retailer 20$7,338 AUD
Retailer 5$8,630 AUD
Retailer 19$9,983 AUD
NZ Jewellers$10,401 AUD

23 data points across 23 retailers

23 retailers$4,486 AUD to $10,401 AUD

B+
Cheapest Retailer
-
$4,486 AUD
₹299,403 INR
B
Retailer 2
-
$5,097 AUD
$3,572 USD
View
B
Retailer 3
-
$5,254 AUD
$3,682 USD
View
B
Retailer 4
-
$5,294 AUD
$3,710 USD
View
B
Retailer 5
-
$5,344 AUD
$3,745 USD
View
B
Retailer 6
-
$5,466 AUD
$3,831 USD
View
B
Retailer 7
-
$5,511 AUD
$3,862 USD
View
Final sale: no returns
B
Retailer 8
-
$5,679 AUD
$3,980 USD
View
B
Retailer 9
-
$5,823 AUD
£3,213 GBP
View
B
Retailer 10
-
$5,970 AUD
$4,184 USD
View
B
Retailer 11
-
$5,970 AUD
$4,184 USD
View
B
Retailer 12
-
$5,970 AUD
$4,184 USD
View
B
Retailer 13
-
$6,107 AUD
£3,370 GBP
View
B
Retailer 14
-
$6,181 AUD
$4,332 USD
View
B
Retailer 15
-
$6,334 AUD
$4,439 USD
View
Retailer 16
-
$6,401 AUD
View
Price last confirmed 30 days ago
B
Retailer 17
-
$6,474 AUD
$4,537 USD
View
B
Retailer 18
-
$6,756 AUD
€4,509 EUR
View
B
Retailer 19
-
$6,888 AUD
$4,827 USD
View
B
Retailer 20
-
$7,338 AUD
ZAR 83,079 ZAR
View
Retailer 21
-
$8,630 AUD
$6,048 USD
View
Price last confirmed 7 days ago
B
Retailer 22
-
$9,983 AUD
£5,509 GBP
View
Most Expensive
B
NZ Jewellers
ac532a44-bd7d-45e3-ad64-4a41ba6839dc · Nov 3
$10,401 AUD
$7,289 USD
View
22 more retailers have this diamond
Prices start from $4,486 AUDSave up to $5,915 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
$4,486 AUD