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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7541749455

Certificate GIA 7541749455

Diamond specifications and retailer prices

From $5,192 AUD
$3,639 USD
As of November 3, 2026
Save $5,630 AUD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,839 AUD at NZ Jewellers · As of September 30, 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 7541749455. Listed at 20 retailers as of November 1, 2026, with a 108% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7541749455
Dimensions10.21 × 5.51 × 3.61 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Top View
10.21 mm5.51 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7541749455
Side View
Table 60.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 65.5%

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: $5,192 AUD|Low: $4,917 AUD|High: $10,953 AUD|Avg: $7,307 AUD
Retailer 1
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
November 3, 2026
Retailer 1$5,192 AUD
Retailer 10$5,297 AUD
Retailer 2$5,556 AUD
Retailer 9$5,655 AUD
Retailer 7$5,722 AUD
Retailer 6$6,156 AUD
Retailer 8$6,608 AUD
Retailer 11$6,706 AUD
Retailer 13$6,706 AUD
Retailer 5$6,850 AUD
Retailer 12$6,935 AUD
Retailer 14$7,687 AUD
Retailer 4$8,353 AUD
Retailer 3$10,822 AUD

45 data points across 14 retailers

20 retailers$5,192 AUD to $10,822 AUD

B+
Cheapest Retailer
-
$5,192 AUD
$3,639 USD
B
Retailer 2
-
$5,297 AUD
$3,712 USD
View
B
Retailer 3
-
$5,556 AUD
$3,894 USD
View
Final sale: no returns
B
Retailer 4
-
$5,655 AUD
$3,963 USD
View
B
Retailer 5
-
$5,722 AUD
$4,010 USD
View
Retailer 6
-
$6,156 AUD
$4,314 USD
View
Price last confirmed 33 days ago
Retailer 7
-
$6,156 AUD
$4,314 USD
View
Price last confirmed 33 days ago
B
Retailer 8
-
$6,156 AUD
$4,314 USD
View
B
Retailer 9
-
$6,351 AUD
View
B
Retailer 10
-
$6,608 AUD
£3,646 GBP
View
B
Retailer 11
-
$6,706 AUD
$4,700 USD
View
B
Retailer 12
-
$6,706 AUD
$4,700 USD
View
Retailer 13
-
$6,850 AUD
View
Price last confirmed 24 days ago
B
Retailer 14
-
$6,935 AUD
$4,860 USD
View
Retailer 15
-
$7,103 AUD
$4,978 USD
View
Price last confirmed 35 days ago
Retailer 16
-
$7,504 AUD
$5,259 USD
View
Price last confirmed 11 days ago
B
Retailer 17
-
$7,687 AUD
€5,131 EUR
View
B
Retailer 18
-
$8,353 AUD
ZAR 94,567 ZAR
View
B
Retailer 19
-
$10,822 AUD
£5,972 GBP
View
Most Expensive
NZ Jewellers
2e8647e1-b92f-46c4-a630-b29b07b36f68 · Sep 30
$11,839 AUD
$8,297 USD
View
Price under review
19 more retailers have this diamond
Prices start from $5,192 AUDSave up to $5,630 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
$5,192 AUD