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Marquise|Natural|GIA

0.40ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1563201231

Certificate GIA 1563201231

Diamond specifications and retailer prices

From $324 SGD
$253 USD
As of November 2, 2026
Save $570 SGD (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,753 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-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 1563201231. Listed at 18 retailers as of November 1, 2026, with a 176% 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

0.40
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle39.2°
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 1563201231
Dimensions7.38 × 3.80 × 2.45 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Top View
7.38 mm3.80 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1563201231
Side View
Table 60.0%Crown 39.2°Girdle: MED-VTKPavilion 40.7°Culet: NoneDepth 64.4%

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 2
Current: $1,753 SGD|Low: $324 SGD|High: $1,753 SGD|Avg: $597 SGD|+16.0%
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
Retailer 16
Retailer 17
November 2, 2026
Retailer 4$324 SGD
Retailer 5$340 SGD
Retailer 12$350 SGD
Retailer 8$379 SGD
Retailer 2$391 SGD
Retailer 9$393 SGD
Retailer 14$472 SGD
Retailer 11$495 SGD
Retailer 16$506 SGD
Retailer 17$509 SGD
Retailer 3$600 SGD
Retailer 6$620 SGD
Retailer 7$639 SGD
Retailer 15$733 SGD
Retailer 10$783 SGD
Retailer 13$893 SGD
NZ Jewellers$1,753 SGD

27 data points across 17 retailers

18 retailers$324 SGD to $893 SGD

A
Cheapest Retailer
-
$324 SGD
$253 USD
Final sale: no returns
A
Retailer 2
-
$339 SGD
$265 USD
View
A
Retailer 3
-
$340 SGD
$266 USD
View
A
Retailer 4
-
$350 SGD
$274 USD
View
A
Retailer 5
-
$379 SGD
$296 USD
View
A
Retailer 6
-
$391 SGD
$306 USD
View
A
Retailer 7
-
$393 SGD
HK$2,400 HKD
View
B+
Retailer 8
-
$472 SGD
$369 USD
View
B+
Retailer 9
-
$495 SGD
£305 GBP
View
B+
Retailer 10
-
$506 SGD
$396 USD
View
B+
Retailer 11
-
$509 SGD
$398 USD
View
B+
Retailer 12
-
$600 SGD
ZAR 7,579 ZAR
View
B
Retailer 13
-
$620 SGD
$485 USD
View
B
Retailer 14
-
$639 SGD
$500 USD
View
B
Retailer 15
-
$733 SGD
€546 EUR
View
B
Retailer 16
-
$783 SGD
£482 GBP
View
B
Retailer 17
-
$893 SGD
£550 GBP
View
Most Expensive
NZ Jewellers
6d49b65a-c097-4767-8cc5-23db7369fed4 · Oct 30
$1,753 SGD
$1,371 USD
View
Price under review
17 more retailers have this diamond
Prices start from $324 SGDSave up to $570 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
0.40ct Marquise
$324 SGD