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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 7558566290

Certificate GIA 7558566290

Diamond specifications and retailer prices

From $595 USD
As of November 2, 2026
Save $1,430 USD (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,025 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded F 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 7558566290. Listed at 6 retailers as of October 30, 2026, with prices from $595 to $2,025, a $1,430 spread on the same certified stone. NZ Jewellers lists it at $2,025. 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

0.51
Carat
F
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
OriginNatural
Grading LabGIA
CertificateGIA 7558566290
Dimensions8.17 × 4.20 × 2.60 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Feather
Top View
8.17 mm4.20 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558566290
Side View
Table 58.0%Crown 34°Girdle: STK-VTKPavilionCulet: NoneDepth 61.9%

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 2
Current: $2,025 USD|Low: $567 USD|High: $2,102 USD|Avg: $1,015 USD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6$595 USD
Retailer 5$625 USD
Retailer 3$789 USD
Retailer 4$809 USD
Retailer 2$866 USD
NZ Jewellers$2,025 USD

43 data points across 6 retailers

6 retailers$595 USD to $2,025 USD

A
Cheapest Retailer
-
$595 USD
Final sale: no returns
A
Retailer 2
-
$625 USD
SGD 844 SGD
View
B+
Retailer 3
-
$789 USD
£621 GBP
View
B+
Retailer 4
-
$809 USD
£637 GBP
View
B+
Retailer 5
-
$866 USD
€825 EUR
View
Most Expensive
B
NZ Jewellers
00d38d6e-a376-4577-80d4-d40c8aeb1dae · Oct 30
$2,025 USD
View
5 more retailers have this diamond
Prices start from $595 USDSave up to $1,430 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
0.51ct Marquise
$595 USD