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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 5553457339

Certificate GIA 5553457339

Diamond specifications and retailer prices

From $2,408 SGD
As of November 6, 2026
Save $2,971 SGD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,893 SGD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct 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 5553457339. Listed at 22 retailers as of November 2, 2026, with a 123% 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553457339
Dimensions10.58 × 5.04 × 3.13 mm
L/W Ratio2.10
Girdle conditionThick to Very Thick
Key to symbols
Feather, Pinpoint, Needle, Indented Natural
Top View
10.58 mm5.04 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553457339
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.0%

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 6
Current: $3,952 SGD|Low: $2,099 SGD|High: $5,379 SGD|Avg: $3,077 SGD
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 16$2,099 SGD
Retailer 13$2,179 SGD
Retailer 12$2,408 SGD
Retailer 8$2,512 SGD
Retailer 5$2,567 SGD
Retailer 22$2,613 SGD
Retailer 15$2,616 SGD
Retailer 3$2,618 SGD
Retailer 18$2,712 SGD
Retailer 4$2,807 SGD
Retailer 9$2,852 SGD
Retailer 17$2,940 SGD
Retailer 14$2,949 SGD
Retailer 24$3,010 SGD
Retailer 10$3,135 SGD
Retailer 6$3,217 SGD
Retailer 7$3,217 SGD
Retailer 21$3,248 SGD
Retailer 11$3,319 SGD
Retailer 19$3,574 SGD
Retailer 20$3,747 SGD
Retailer 1$3,952 SGD
Retailer 23$4,415 SGD
Retailer 2$5,379 SGD

32 data points across 24 retailers

22 retailers$2,408 SGD to $5,379 SGD

Retailer 1
-
$2,099 SGD
Price last confirmed 21 days ago
A
Retailer 2
-
$2,408 SGD
View
B+
Retailer 3
-
$2,512 SGD
View
B+
Retailer 4
-
$2,567 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,613 SGD
View
B+
Retailer 6
-
$2,618 SGD
View
B+
Retailer 7
-
$2,712 SGD
View
B+
Retailer 8
-
$2,807 SGD
View
Retailer 9
-
$2,818 SGD
View
Price last confirmed 30 days ago
B+
Retailer 10
-
$2,852 SGD
View
B+
Retailer 11
-
$3,010 SGD
View
B+
Retailer 12
-
$3,135 SGD
View
B+
Retailer 13
-
$3,217 SGD
View
B+
Retailer 14
-
$3,217 SGD
View
B+
Retailer 15
-
$3,248 SGD
View
B
Retailer 16
-
$3,319 SGD
View
B
Retailer 17
-
$3,574 SGD
View
B
Retailer 18
-
$3,747 SGD
View
B
Retailer 19
-
$3,952 SGD
View
B
Retailer 20
-
$4,415 SGD
View
B
Retailer 21
-
$5,379 SGD
View
Most Expensive
NZ Jewellers
d5056980-58bb-42a3-a1f3-9b25bfcf425e · Sep 29
$5,893 SGD
$4,598 USD
View
Price last confirmed 38 days ago
21 more retailers have this diamond
Prices start from $2,408 SGDSave up to $2,971 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
1.00ct Marquise
$2,408 SGD