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0.51ct H FL Round Natural Diamond

EX • H/FL • GIA 1509815203

Certificate GIA 1509815203

Diamond specifications and retailer prices

From $1,605 NZD
As of November 4, 2026
Save $3,846 NZD (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,451 NZD 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 October 30, 2026, with prices from $1,605 to $5,451, a $3,846 spread on the same certified stone. NZ Jewellers lists it at $5,451. 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 4
Current: $5,451 NZD|Low: $1,265 NZD|High: $5,548 NZD|Avg: $2,806 NZD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 5$1,605 NZD
Retailer 2$2,078 NZD
Retailer 3$2,257 NZD
Retailer 6$2,284 NZD
Retailer 7$2,362 NZD
Retailer 4$3,177 NZD
NZ Jewellers$5,451 NZD

31 data points across 7 retailers

8 retailers$1,605 NZD to $5,451 NZD

A
Cheapest Retailer
-
$1,605 NZD
Final sale: no returns
B+
Retailer 2
-
$2,078 NZD
View
B+
Retailer 3
-
$2,257 NZD
View
B+
Retailer 4
-
$2,284 NZD
View
B+
Retailer 5
-
$2,362 NZD
View
B
Retailer 6
-
$3,177 NZD
View
B
Retailer 7
-
$3,428 NZD
View
Most Expensive
B
NZ Jewellers
ae09c55e-2bc0-4d57-9fab-3cbe3d830e9b · Oct 30
$5,451 NZD
$3,064 USD
View
7 more retailers have this diamond
Prices start from $1,605 NZDSave up to $3,846 NZD

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
$1,605 NZD