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Marquise|Natural|GIA

0.40ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1559930271

Certificate GIA 1559930271

Diamond specifications and retailer prices

From $358 SGD
₹26,676 INR
As of November 2, 2026
Save $519 SGD (59%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $926 SGD at Torres Jewel Co · As of September 23, 2026
View at Torres Jewel Co

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-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 1559930271. Listed at 14 retailers as of November 2, 2026, with a 145% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559930271
Dimensions3.65 × 8.26 × 2.34 mm
L/W Ratio2.26
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
3.65 mm8.26 mm0.40 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559930271
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.1%

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: $358 SGD|Low: $357 SGD|High: $2,260 SGD|Avg: $759 SGD|-4.9%
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
Torres Jewel Co
November 2, 2026
Retailer 1$358 SGD
Retailer 13$425 SGD
Retailer 7$454 SGD
Retailer 8$466 SGD
Retailer 12$505 SGD
Retailer 10$523 SGD
Retailer 3$589 SGD
Retailer 11$673 SGD
Retailer 4$680 SGD
Retailer 9$748 SGD
Retailer 2$834 SGD
Retailer 6$878 SGD
Torres Jewel Co$926 SGD
Retailer 5$2,260 SGD

41 data points across 14 retailers

14 retailers$358 SGD to $878 SGD

A
Cheapest Retailer
-
$358 SGD
₹26,676 INR
A
Retailer 2
-
$425 SGD
HK$2,600 HKD
View
A
Retailer 3
-
$454 SGD
$355 USD
View
A
Retailer 4
-
$466 SGD
View
B+
Retailer 5
-
$505 SGD
$395 USD
View
B+
Retailer 6
-
$523 SGD
View
Retailer 7
-
$589 SGD
$461 USD
View
Price last confirmed 41 days ago
B
Retailer 8
-
$673 SGD
$526 USD
View
Retailer 9
-
$680 SGD
$532 USD
View
Price last confirmed 41 days ago
B
Retailer 10
-
$748 SGD
$585 USD
View
Retailer 11
-
$834 SGD
£514 GBP
View
Price last confirmed 39 days ago
B
Retailer 12
-
$878 SGD
£540 GBP
View
Most Expensive
Torres Jewel Co
25273083 · Sep 23
$926 SGD
A$1,114 AUD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from $358 SGDSave up to $519 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
$358 SGD