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Marquise|Natural|GIA

0.40ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6545323759

Certificate GIA 6545323759

Diamond specifications and retailer prices

From $324 SGD
₹24,113 INR
As of November 2, 2026
Save $620 SGD (66%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,565 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 I 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 6545323759. Listed at 16 retailers as of November 1, 2026, with a 191% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle38°
Pavilion angle39.66°
OriginNatural
Grading LabGIA
CertificateGIA 6545323759
Dimensions7.41 × 3.90 × 2.44 mm
L/W Ratio1.90
Top View
7.41 mm3.90 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 6545323759
Side View
Table 58.0%Crown 38°Girdle: THN-THKPavilion 39.66°Culet: NoneDepth 62.6%

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: $324 SGD|Low: $323 SGD|High: $953 SGD|Avg: $651 SGD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 1$324 SGD
Retailer 4$525 SGD
Retailer 5$633 SGD
Retailer 7$690 SGD
Retailer 3$765 SGD
Retailer 2$826 SGD
Retailer 6$943 SGD

29 data points across 7 retailers

16 retailers$324 SGD to $943 SGD

A
Cheapest Retailer
-
$324 SGD
₹24,113 INR
A
Retailer 2
-
$408 SGD
$319 USD
View
A
Retailer 3
-
$440 SGD
$344 USD
View
A
Retailer 4
-
$455 SGD
$356 USD
View
B+
Retailer 5
-
$470 SGD
$368 USD
View
B+
Retailer 6
-
$525 SGD
£323 GBP
View
B+
Retailer 7
-
$550 SGD
$430 USD
View
B+
Retailer 8
-
$575 SGD
$450 USD
View
B+
Retailer 9
-
$633 SGD
ZAR 7,998 ZAR
View
B
Retailer 10
-
$639 SGD
$500 USD
View
Retailer 11
-
$654 SGD
A$787 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$690 SGD
$540 USD
View
B
Retailer 13
-
$765 SGD
€570 EUR
View
B
Retailer 14
-
$826 SGD
£509 GBP
View
B
Retailer 15
-
$943 SGD
£581 GBP
View
Most Expensive
NZ Jewellers
433b11c4-d491-433a-a236-ff45f3c0c487 · Oct 30
$1,565 SGD
$1,224 USD
View
Price under review
15 more retailers have this diamond
Prices start from $324 SGDSave up to $620 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