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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 $2,952 SGD
As of October 31, 2026
Save $3,888 SGD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,840 SGD 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 $2,952 to $6,840, a $3,888 spread on the same certified stone. NZ Jewellers lists it at $6,840. 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: $6,840 SGD|Low: $2,944 SGD|High: $7,089 SGD|Avg: $4,286 SGD|-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$2,952 SGD
Retailer 7$3,515 SGD
Retailer 4$3,518 SGD
Retailer 15$3,519 SGD
Retailer 5$3,545 SGD
Retailer 2$3,805 SGD
Retailer 14$3,926 SGD
Retailer 9$4,062 SGD
Retailer 3$4,077 SGD
Retailer 6$4,108 SGD
Retailer 13$4,529 SGD
Retailer 10$4,594 SGD
Retailer 8$4,791 SGD
Retailer 11$6,564 SGD
NZ Jewellers$6,840 SGD

25 data points across 15 retailers

20 retailers$2,952 SGD to $6,840 SGD

A
Cheapest Retailer
-
$2,952 SGD
B+
Retailer 2
-
$3,515 SGD
View
A
Retailer 3
-
$3,518 SGD
View
A
Retailer 4
-
$3,519 SGD
View
B+
Retailer 5
-
$3,545 SGD
View
B+
Retailer 6
-
$3,805 SGD
View
Retailer 7
-
$3,926 SGD
View
Price last confirmed 40 days ago
Retailer 8
-
$3,926 SGD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$3,926 SGD
View
B+
Retailer 10
-
$4,062 SGD
View
B+
Retailer 11
-
$4,077 SGD
View
B+
Retailer 12
-
$4,108 SGD
View
Retailer 13
-
$4,193 SGD
View
Price last confirmed 29 days ago
Retailer 14
-
$4,529 SGD
View
Price last confirmed 42 days ago
B+
Retailer 15
-
$4,529 SGD
View
B
Retailer 16
-
$4,594 SGD
View
B+
Retailer 17
-
$4,791 SGD
View
B
Retailer 18
-
$6,564 SGD
View
Retailer 19
-
$6,840 SGD
View
Price last confirmed 41 days ago
Most Expensive
B
NZ Jewellers
4373f7b7-d4b0-48b8-a48e-58b472d3a21f · Nov 5
$6,840 SGD
$5,355 USD
View
19 more retailers have this diamond
Prices start from $2,952 SGDSave up to $3,888 SGD

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
$2,952 SGD