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Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2566118494

Certificate GIA 2566118494

Diamond specifications and retailer prices

From $994 NZD
As of November 6, 2026
Save $2,735 NZD (73%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,426 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter 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 2566118494. Listed at 13 retailers as of November 5, 2026, with a 275% 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

0.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566118494
Dimensions8.24 × 4.07 × 2.52 mm
L/W Ratio2.02
Culet sizeNone
Top View
8.24 mm4.07 mm0.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566118494
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 62.0%

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 6
Current: $4,426 NZD|Low: $994 NZD|High: $4,426 NZD|Avg: $1,906 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2$994 NZD
Retailer 5$1,245 NZD
Retailer 6$1,743 NZD
Retailer 8$1,847 NZD
Retailer 3$2,230 NZD
Retailer 11$2,415 NZD
Retailer 13$2,511 NZD
Retailer 12$2,616 NZD
Retailer 4$2,787 NZD
Retailer 9$2,966 NZD
Retailer 10$3,020 NZD
Retailer 7$3,729 NZD
MOH London$4,426 NZD

42 data points across 13 retailers

13 retailers$994 NZD to $3,729 NZD

A
Cheapest Retailer
-
$994 NZD
Retailer 2
-
$1,245 NZD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
$1,743 NZD
View
B+
Retailer 4
-
$1,847 NZD
View
B
Retailer 5
-
$2,230 NZD
View
Final sale: no returns
B
Retailer 6
-
$2,415 NZD
View
B
Retailer 7
-
$2,511 NZD
View
B
Retailer 8
-
$2,616 NZD
View
B
Retailer 9
-
$2,787 NZD
View
B
Retailer 10
-
$2,966 NZD
View
B
Retailer 11
-
$3,020 NZD
View
C
Retailer 12
-
$3,729 NZD
View
Most Expensive
MOH London
369E450DD · Nov 2
$4,426 NZD
£1,932 GBP
View
Price under review
12 more retailers have this diamond
Prices start from $994 NZDSave up to $2,735 NZD

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
0.50ct Marquise
$994 NZD