Marquise|Natural|GIA

0.50ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 5543621869

Certificate GIA 5543621869

Diamond specifications and retailer prices

From $843 USD
As of October 29, 2026
Save $657 USD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,911 USD at NZ Jewellers · As of October 21, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5543621869. Listed at 16 retailers as of October 27, 2026, with a 78% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 5543621869
Dimensions7.91 × 4.13 × 2.55 mm
L/W Ratio1.92
Top View
7.91 mm4.13 mm0.50 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5543621869
Side View
Table 59.0%CrownGirdle: THK-VTKPavilion 40.2°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,203 USD|Low: $841 USD|High: $1,721 USD|Avg: $1,213 USD|+3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 28, 2026
Retailer 4$841 USD
Retailer 6$1,030 USD
Retailer 7$1,030 USD
Retailer 2$1,038 USD
Retailer 1$1,203 USD
Retailer 5$1,397 USD
Retailer 8$1,500 USD
Retailer 3$1,709 USD

39 data points across 8 retailers

16 retailers$843 USD to $1,500 USD

Retailer 1
-
$826 USD
Price last confirmed 7 days ago
Retailer 2
-
$841 USD
View
Price last confirmed 14 days ago
Retailer 3
-
$841 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$843 USD
View
B+
Retailer 5
-
$852 USD
View
Retailer 6
-
$873 USD
View
Price last confirmed 13 days ago
Retailer 7
-
$970 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$1,030 USD
View
B
Retailer 9
-
$1,030 USD
View
Retailer 10
-
$1,038 USD
£818 GBP
View
Price last confirmed 8 days ago
B
Retailer 11
-
$1,041 USD
View
B
Retailer 12
-
$1,070 USD
View
B
Retailer 13
-
$1,203 USD
€1,146 EUR
View
B
Retailer 14
-
$1,500 USD
CA$2,083 CAD
View
Retailer 15
-
$1,709 USD
£1,346 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
6cd1a02b-cdf6-4e05-a5db-712d00adc034 · Oct 21
$2,911 USD
View
Price under review
15 more retailers have this diamond
Prices start from $843 USDSave up to $657 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.

B+
0.50ct Marquise
$843 USD