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Marquise|Natural|GIA

1.03ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1558431023

Certificate GIA 1558431023

Diamond specifications and retailer prices

From $3,301 AUD
As of October 31, 2026
Save $4,348 AUD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,650 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural marquise diamond

This 1.03ct natural marquise sits in the classic one-carat band, graded H 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 1558431023. Listed at 20 retailers as of October 31, 2026, with prices from $3,301 to $7,650, a $4,348 spread on the same certified stone. NZ Jewellers lists it at $7,650. 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

1.03
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558431023
Dimensions10.04 × 5.28 × 3.37 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
10.04 mm5.28 mm1.03 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558431023
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $7,650 AUD|Low: $3,293 AUD|High: $7,928 AUD|Avg: $4,794 AUD|-3.5%
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 5, 2026
Retailer 12$3,301 AUD
Retailer 7$3,931 AUD
Retailer 4$3,934 AUD
Retailer 15$3,936 AUD
Retailer 5$3,964 AUD
Retailer 2$4,256 AUD
Retailer 14$4,391 AUD
Retailer 9$4,543 AUD
Retailer 3$4,560 AUD
Retailer 6$4,594 AUD
Retailer 13$5,065 AUD
Retailer 10$5,138 AUD
Retailer 8$5,358 AUD
Retailer 11$7,341 AUD
NZ Jewellers$7,650 AUD

25 data points across 15 retailers

20 retailers$3,301 AUD to $7,650 AUD

A
Cheapest Retailer
-
$3,301 AUD
B+
Retailer 2
-
$3,931 AUD
View
A
Retailer 3
-
$3,934 AUD
View
A
Retailer 4
-
$3,936 AUD
View
B+
Retailer 5
-
$3,964 AUD
View
B+
Retailer 6
-
$4,256 AUD
View
Retailer 7
-
$4,391 AUD
View
Price last confirmed 40 days ago
Retailer 8
-
$4,391 AUD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$4,391 AUD
View
B+
Retailer 10
-
$4,543 AUD
View
B+
Retailer 11
-
$4,560 AUD
View
B+
Retailer 12
-
$4,594 AUD
View
Retailer 13
-
$4,690 AUD
View
Price last confirmed 29 days ago
Retailer 14
-
$5,065 AUD
View
Price last confirmed 42 days ago
B+
Retailer 15
-
$5,065 AUD
View
B
Retailer 16
-
$5,138 AUD
View
B+
Retailer 17
-
$5,358 AUD
View
B
Retailer 18
-
$7,341 AUD
View
Retailer 19
-
$7,650 AUD
View
Price last confirmed 41 days ago
Most Expensive
B
NZ Jewellers
4373f7b7-d4b0-48b8-a48e-58b472d3a21f · Nov 5
$7,650 AUD
$5,355 USD
View
19 more retailers have this diamond
Prices start from $3,301 AUDSave up to $4,348 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.

A
1.03ct Marquise
$3,301 AUD