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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1553995737

Certificate GIA 1553995737

Diamond specifications and retailer prices

From $461 USD
HK$3,600 HKD
As of November 1, 2026
Save $1,263 USD (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,724 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553995737. Listed at 14 retailers as of October 30, 2026, with prices from $461 to $1,724, a $1,263 spread on the same certified stone. NZ Jewellers lists it at $1,724. 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
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1553995737
Dimensions7.77 × 4.33 × 2.61 mm
L/W Ratio1.79
Key to symbols
Twinning Wisp, Feather
Top View
7.77 mm4.33 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 1553995737
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 60.2%

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: $1,724 USD|Low: $448 USD|High: $1,724 USD|Avg: $744 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
November 2, 2026
Retailer 3$461 USD
Retailer 14$506 USD
Retailer 11$550 USD
Retailer 5$574 USD
Retailer 12$592 USD
Retailer 13$592 USD
Retailer 6$634 USD
Retailer 10$634 USD
Retailer 2$657 USD
Retailer 4$688 USD
Retailer 7$694 USD
Retailer 9$817 USD
Retailer 8$1,270 USD
NZ Jewellers$1,724 USD

31 data points across 14 retailers

14 retailers$461 USD to $1,724 USD

A
Cheapest Retailer
-
$461 USD
HK$3,600 HKD
B+
Retailer 2
-
$506 USD
View
Final sale: no returns
A
Retailer 3
-
$550 USD
View
B+
Retailer 4
-
$574 USD
SGD 776 SGD
View
B+
Retailer 5
-
$592 USD
View
A
Retailer 6
-
$592 USD
View
B+
Retailer 7
-
$634 USD
View
Retailer 8
-
$634 USD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
$657 USD
£517 GBP
View
B+
Retailer 10
-
$688 USD
View
B+
Retailer 11
-
$694 USD
£547 GBP
View
B
Retailer 12
-
$817 USD
€778 EUR
View
B
Retailer 13
-
$1,270 USD
£1,000 GBP
View
Most Expensive
B
NZ Jewellers
f71baf55-1e42-41d2-9725-8ffb66d927e9 · Oct 30
$1,724 USD
View
13 more retailers have this diamond
Prices start from $461 USDSave up to $1,263 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
$461 USD