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Round|Natural|GIA

0.51ct H FL Round Natural Diamond

EX • H/FL • GIA 1509815203

Certificate GIA 1509815203

Diamond specifications and retailer prices

From €808 EUR
As of November 6, 2026
Save €918 EUR (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €2,744 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1509815203. Listed at 8 retailers as of November 5, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
H
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1509815203
Dimensions5.16 × 5.20 × 3.14 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.16 mm5.20 mm0.51 ctH / FL
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509815203
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.7%

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 6
Current: €2,744 EUR|Low: €637 EUR|High: €2,794 EUR|Avg: €1,412 EUR|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5€808 EUR
Retailer 3€1,046 EUR
Retailer 2€1,137 EUR
Retailer 6€1,150 EUR
Retailer 7€1,189 EUR
Retailer 4€1,600 EUR
NZ Jewellers€2,744 EUR

32 data points across 7 retailers

8 retailers€808 EUR to €1,726 EUR

A
Cheapest Retailer
-
€808 EUR
Final sale: no returns
B+
Retailer 2
-
€1,046 EUR
View
B+
Retailer 3
-
€1,137 EUR
View
B+
Retailer 4
-
€1,150 EUR
View
B+
Retailer 5
-
€1,189 EUR
View
B
Retailer 6
-
€1,600 EUR
View
B
Retailer 7
-
€1,726 EUR
View
Most Expensive
NZ Jewellers
ae09c55e-2bc0-4d57-9fab-3cbe3d830e9b · Oct 30
€2,744 EUR
$3,064 USD
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from €808 EURSave up to €918 EUR

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 Round
€808 EUR