Marquise|Natural|GIA

0.40ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2554950670

Certificate GIA 2554950670

Diamond specifications and retailer prices

From $303 USD
₹28,869 INR
As of November 1, 2026
Save $660 USD (69%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $963 USD 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 $303 to $963, a $660 spread on the same certified stone. MOH London lists it at $963. 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
Color
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: $963 USD|Low: $302 USD|High: $1,043 USD|Avg: $563 USD|-6.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 3$303 USD
Retailer 5$358 USD
Retailer 6$440 USD
Retailer 4$451 USD
Retailer 2$675 USD
MOH London$963 USD

43 data points across 6 retailers

9 retailers$303 USD to $963 USD

A
Cheapest Retailer
-
$303 USD
₹28,869 INR
A
Retailer 2
-
$358 USD
HK$2,800 HKD
View
B+
Retailer 3
-
$440 USD
SGD 595 SGD
View
B+
Retailer 4
-
$451 USD
View
Retailer 5
-
$480 USD
View
Price last confirmed 32 days ago
Retailer 6
-
$482 USD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$675 USD
£532 GBP
View
Most Expensive
B
MOH London
2994AF184 · Nov 1
$963 USD
£758 GBP
View
7 more retailers have this diamond
Prices start from $303 USDSave up to $660 USD

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
$303 USD