Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2556995298

Certificate GIA 2556995298

Diamond specifications and retailer prices

From $602 USD
HK$4,700 HKD
As of October 31, 2026
Save $874 USD (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,523 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556995298. Listed at 20 retailers as of October 26, 2026, with a 145% 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556995298
Dimensions7.67 × 4.30 × 2.55 mm
L/W Ratio1.78
Key to symbols
Twinning Wisp, Feather
Top View
7.67 mm4.30 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556995298
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

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: Oct 31
Current: $2,523 USD|Low: $576 USD|High: $2,523 USD|Avg: $991 USD|+3.7%
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
Retailer 19
October 31, 2026
Retailer 2$602 USD
Retailer 11$718 USD
Retailer 6$742 USD
Retailer 4$800 USD
Retailer 17$804 USD
Retailer 19$804 USD
Retailer 8$816 USD
Retailer 10$835 USD
Retailer 18$835 USD
Retailer 7$905 USD
Retailer 16$928 USD
Retailer 9$937 USD
Retailer 12$968 USD
Retailer 5$975 USD
Retailer 15$990 USD
Retailer 13$1,138 USD
Retailer 14$1,242 USD
Retailer 3$1,476 USD
NZ Jewellers$2,523 USD

26 data points across 19 retailers

20 retailers$602 USD to $1,476 USD

A
Cheapest Retailer
-
$602 USD
HK$4,700 HKD
Retailer 2
-
$718 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$742 USD
View
Final sale: no returns
B+
Retailer 4
-
$800 USD
View
A
Retailer 5
-
$804 USD
View
A
Retailer 6
-
$804 USD
View
B+
Retailer 7
-
$816 USD
View
B+
Retailer 8
-
$835 USD
SGD 1,128 SGD
View
B+
Retailer 9
-
$835 USD
View
B+
Retailer 10
-
$905 USD
View
B+
Retailer 11
-
$928 USD
View
B+
Retailer 12
-
$937 USD
View
B+
Retailer 13
-
$968 USD
£762 GBP
View
B+
Retailer 14
-
$975 USD
View
B+
Retailer 15
-
$990 USD
£780 GBP
View
B+
Retailer 16
-
$1,138 USD
€1,084 EUR
View
B
Retailer 17
-
$1,242 USD
ZAR 20,060 ZAR
View
Retailer 18
-
$1,253 USD
A$1,927 AUD
View
Price last confirmed 26 days ago
B
Retailer 19
-
$1,476 USD
£1,162 GBP
View
Most Expensive
NZ Jewellers
cbc01693-a960-424f-adb3-889c7dd00381 · Oct 30
$2,523 USD
View
Price under review
19 more retailers have this diamond
Prices start from $602 USDSave up to $874 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
$602 USD