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Marquise|Natural|GIA

0.40ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2554950670

Certificate GIA 2554950670

Diamond specifications and retailer prices

From $388 SGD
₹28,869 INR
As of November 1, 2026
Save $843 SGD (69%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,231 SGD at MOH London · As of November 1, 2026
View at MOH London

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 2554950670. Listed at 9 retailers as of November 1, 2026, with prices from $388 to $1,231, a $843 spread on the same certified stone. MOH London lists it at $1,231. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554950670
Dimensions7.14 × 3.85 × 2.41 mm
L/W Ratio1.85
Girdle conditionThick to Very Thick
Key to symbols
Crystal
Top View
7.14 mm3.85 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554950670
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.5%

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 1
Current: $1,231 SGD|Low: $387 SGD|High: $1,333 SGD|Avg: $720 SGD|-6.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 3$388 SGD
Retailer 5$458 SGD
Retailer 6$563 SGD
Retailer 4$577 SGD
Retailer 2$863 SGD
MOH London$1,231 SGD

43 data points across 6 retailers

9 retailers$388 SGD to $1,231 SGD

A
Cheapest Retailer
-
$388 SGD
₹28,869 INR
A
Retailer 2
-
$458 SGD
HK$2,800 HKD
View
B+
Retailer 3
-
$563 SGD
View
B+
Retailer 4
-
$577 SGD
$451 USD
View
Retailer 5
-
$614 SGD
$480 USD
View
Price last confirmed 32 days ago
Retailer 6
-
$616 SGD
$482 USD
View
Price last confirmed 26 days ago
B
Retailer 7
-
$863 SGD
£532 GBP
View
Most Expensive
B
MOH London
2994AF184 · Nov 1
$1,231 SGD
£758 GBP
View
7 more retailers have this diamond
Prices start from $388 SGDSave up to $843 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
$388 SGD