Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 3545398580

Certificate GIA 3545398580

Diamond specifications and retailer prices

From $748 USD
As of October 29, 2026
Save $1,017 USD (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,018 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 3545398580. Listed at 23 retailers as of October 26, 2026, with a 136% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3545398580
Dimensions8.10 × 4.15 × 2.57 mm
L/W Ratio1.95
Top View
8.10 mm4.15 mm0.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3545398580
Side View
Table 58.0%CrownGirdle: VTN-THKPavilion 40.6°Culet: 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: Oct 29
Current: $1,127 USD|Low: $680 USD|High: $1,784 USD|Avg: $1,173 USD|+6.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$748 USD
Retailer 6$834 USD
Retailer 9$872 USD
Retailer 5$1,035 USD
Retailer 1$1,127 USD
Retailer 2$1,352 USD
Retailer 8$1,447 USD
Retailer 3$1,482 USD
Retailer 4$1,765 USD

44 data points across 9 retailers

23 retailers$748 USD to $1,765 USD

A
Cheapest Retailer
-
$748 USD
Final sale: no returns
A
Retailer 2
-
$806 USD
View
A
Retailer 3
-
$834 USD
SGD 1,127 SGD
View
B+
Retailer 4
-
$856 USD
View
B+
Retailer 5
-
$865 USD
View
B+
Retailer 6
-
$872 USD
View
B+
Retailer 7
-
$872 USD
View
B+
Retailer 8
-
$875 USD
A$1,346 AUD
View
B+
Retailer 9
-
$882 USD
View
B+
Retailer 10
-
$905 USD
View
B+
Retailer 11
-
$974 USD
View
B+
Retailer 12
-
$1,006 USD
View
B
Retailer 13
-
$1,035 USD
View
B+
Retailer 14
-
$1,081 USD
View
B+
Retailer 15
-
$1,127 USD
£887 GBP
View
B
Retailer 16
-
$1,186 USD
View
B
Retailer 17
-
$1,281 USD
View
B
Retailer 18
-
$1,352 USD
€1,288 EUR
View
Retailer 19
-
$1,447 USD
A$2,226 AUD
View
Price last confirmed 26 days ago
B
Retailer 20
-
$1,482 USD
ZAR 23,940 ZAR
View
B
Retailer 21
-
$1,556 USD
CA$2,162 CAD
View
B
Retailer 22
-
$1,765 USD
£1,390 GBP
View
Most Expensive
NZ Jewellers
ecb8af5a-ce34-49cf-9bbe-67104c100532 · Oct 30
$3,018 USD
View
Price under review
22 more retailers have this diamond
Prices start from $748 USDSave up to $1,017 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
$748 USD