Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 5241051030

Certificate GIA 5241051030

Diamond specifications and retailer prices

From $589 USD
HK$4,600 HKD
As of November 1, 2026
Save $1,037 USD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,218 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 5241051030. Listed at 19 retailers as of November 1, 2026, with a 176% 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241051030
Dimensions8.20 × 4.20 × 2.46 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
8.20 mm4.20 mm0.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241051030
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.6%

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 1
Current: $2,218 USD|Low: $589 USD|High: $2,278 USD|Avg: $931 USD|-2.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 9$589 USD
Retailer 18$615 USD
Retailer 15$649 USD
Retailer 10$650 USD
Retailer 14$697 USD
Retailer 17$705 USD
Retailer 8$729 USD
Retailer 3$731 USD
Retailer 12$783 USD
Retailer 2$864 USD
Retailer 7$885 USD
Retailer 5$887 USD
Retailer 6$923 USD
Retailer 11$954 USD
Retailer 4$1,033 USD
Retailer 16$1,092 USD
Retailer 13$1,626 USD
NZ Jewellers$2,218 USD

21 data points across 18 retailers

19 retailers$589 USD to $1,626 USD

A
Cheapest Retailer
-
$589 USD
HK$4,600 HKD
A
Retailer 2
-
$615 USD
View
A
Retailer 3
-
$649 USD
View
Final sale: no returns
A
Retailer 4
-
$650 USD
View
A
Retailer 5
-
$697 USD
€664 EUR
View
A
Retailer 6
-
$705 USD
View
A
Retailer 7
-
$729 USD
SGD 985 SGD
View
A
Retailer 8
-
$731 USD
View
B+
Retailer 9
-
$783 USD
£617 GBP
View
B+
Retailer 10
-
$864 USD
£680 GBP
View
B+
Retailer 11
-
$885 USD
View
B+
Retailer 12
-
$887 USD
View
B+
Retailer 13
-
$923 USD
View
B+
Retailer 14
-
$954 USD
€909 EUR
View
B+
Retailer 15
-
$1,033 USD
View
B+
Retailer 16
-
$1,092 USD
ZAR 17,634 ZAR
View
Retailer 17
-
$1,107 USD
A$1,703 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
$1,626 USD
£1,280 GBP
View
Most Expensive
NZ Jewellers
0bce4cbb-cd49-426c-a1b5-9304e6c395b5 · Oct 30
$2,218 USD
View
Price under review
18 more retailers have this diamond
Prices start from $589 USDSave up to $1,037 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
0.50ct Marquise
$589 USD