CaratHunter
Plans
Marquise|Natural|GIA

1.20ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 7541378078

Certificate GIA 7541378078

Diamond specifications and retailer prices

From $8,294 AUD
As of November 6, 2026
Save $6,830 AUD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,151 AUD at NZ Jewellers · As of November 5, 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 E 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 7541378078. Listed at 14 retailers as of November 2, 2026, with a 82% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7541378078
Dimensions11.08 × 5.51 × 3.44 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, pinpoints and surface graining are not shown.
Top View
11.08 mm5.51 mm1.20 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7541378078
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.5%

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 6
Current: $10,528 AUD|Low: $8,108 AUD|High: $15,305 AUD|Avg: $11,183 AUD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$9,075 AUD
Retailer 6$9,982 AUD
Retailer 3$10,229 AUD
Retailer 1$10,528 AUD
Retailer 7$11,344 AUD
Retailer 2$11,791 AUD
Retailer 4$15,124 AUD

40 data points across 7 retailers

14 retailers$8,294 AUD to $15,124 AUD

B+
Cheapest Retailer
-
$8,294 AUD
B+
Retailer 2
-
$8,512 AUD
View
B+
Retailer 3
-
$8,657 AUD
View
B+
Retailer 4
-
$8,955 AUD
View
B
Retailer 5
-
$9,075 AUD
View
Final sale: no returns
B
Retailer 6
-
$9,832 AUD
View
B
Retailer 7
-
$9,982 AUD
View
B
Retailer 8
-
$10,229 AUD
View
B
Retailer 9
-
$10,528 AUD
View
B
Retailer 10
-
$11,151 AUD
View
B
Retailer 11
-
$11,344 AUD
View
B
Retailer 12
-
$11,791 AUD
View
B
Retailer 13
-
$15,124 AUD
View
Most Expensive
NZ Jewellers
eef5a9a6-8ec8-4569-a35e-f93677fac71b · Nov 5
$18,151 AUD
$12,706 USD
View
Price under review
13 more retailers have this diamond
Prices start from $8,294 AUDSave up to $6,830 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
$8,294 AUD