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Marquise|Natural|GIA

1.01ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 1242100148

Certificate GIA 1242100148

Diamond specifications and retailer prices

From $3,516 SGD
As of November 4, 2026
Save $4,449 SGD (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,965 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct 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 1242100148. Listed at 13 retailers as of November 4, 2026, with prices from $3,516 to $7,965, a $4,449 spread on the same certified stone. NZ Jewellers lists it at $7,965. 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

1.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1242100148
Dimensions9.72 × 5.30 × 3.34 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
9.72 mm5.30 mm1.01 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1242100148
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.0%

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: Nov 4
Current: $7,965 SGD|Low: $3,516 SGD|High: $7,965 SGD|Avg: $4,534 SGD|+14.9%
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
November 6, 2026
Retailer 4$3,516 SGD
Retailer 12$3,666 SGD
Retailer 2$3,695 SGD
Retailer 3$3,810 SGD
Retailer 10$3,810 SGD
Retailer 9$3,956 SGD
Retailer 6$4,032 SGD
Retailer 11$4,395 SGD
Retailer 13$4,441 SGD
Retailer 5$4,458 SGD
Retailer 7$4,649 SGD
Retailer 8$6,353 SGD
NZ Jewellers$7,965 SGD

19 data points across 13 retailers

13 retailers$3,516 SGD to $7,965 SGD

A
Cheapest Retailer
-
$3,516 SGD
Final sale: no returns
A
Retailer 2
-
$3,666 SGD
View
A
Retailer 3
-
$3,695 SGD
View
Retailer 4
-
$3,810 SGD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$3,810 SGD
View
A
Retailer 6
-
$3,956 SGD
View
A
Retailer 7
-
$4,032 SGD
View
A
Retailer 8
-
$4,395 SGD
View
Retailer 9
-
$4,441 SGD
View
Price last confirmed 13 days ago
Retailer 10
-
$4,458 SGD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
$4,649 SGD
View
B+
Retailer 12
-
$6,353 SGD
View
Most Expensive
B
NZ Jewellers
c3eb2987-ce19-4f2f-aaf5-7467343a7841 · Nov 5
$7,965 SGD
$6,236 USD
View
12 more retailers have this diamond
Prices start from $3,516 SGDSave up to $4,449 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
1.01ct Marquise
$3,516 SGD