Marquise|Natural|GIA

0.40ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6555748538

Certificate GIA 6555748538

Diamond specifications and retailer prices

From $359 USD
₹34,194 INR
As of October 31, 2026
Save $771 USD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,130 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 G 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 6555748538. Listed at 14 retailers as of October 31, 2026, with prices from $359 to $1,130, a $771 spread on the same certified stone. MOH London lists it at $1,130. 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
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555748538
Dimensions7.31 × 3.89 × 2.36 mm
L/W Ratio1.88
Culet sizeNone
Key to symbols
Feather
Top View
7.31 mm3.89 mm0.40 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555748538
Side View
Table 57.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,130 USD|Low: $358 USD|High: $1,875 USD|Avg: $756 USD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 4$359 USD
Retailer 9$489 USD
Retailer 8$527 USD
Retailer 5$565 USD
Retailer 3$617 USD
Retailer 10$671 USD
Retailer 6$736 USD
Retailer 2$990 USD
MOH London$1,130 USD
Retailer 7$1,875 USD

32 data points across 10 retailers

14 retailers$359 USD to $1,130 USD

A
Cheapest Retailer
-
$359 USD
₹34,194 INR
A
Retailer 2
-
$422 USD
HK$3,300 HKD
View
Retailer 3
-
$457 USD
View
Price last confirmed 40 days ago
B+
Retailer 4
-
$489 USD
View
B+
Retailer 5
-
$515 USD
SGD 696 SGD
View
B+
Retailer 6
-
$527 USD
View
B
Retailer 7
-
$565 USD
View
B
Retailer 8
-
$617 USD
£486 GBP
View
B
Retailer 9
-
$628 USD
View
B
Retailer 10
-
$671 USD
£528 GBP
View
B
Retailer 11
-
$736 USD
€701 EUR
View
B
Retailer 12
-
$990 USD
£780 GBP
View
Most Expensive
B
MOH London
20E8B75E6 · Nov 1
$1,130 USD
£890 GBP
View
12 more retailers have this diamond
Prices start from $359 USDSave up to $771 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
$359 USD