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Radiant|Natural|GIA

0.51ct F SI2 Radiant Natural Diamond

VG • F/SI2 • GIA 2175512626

Certificate GIA 2175512626

Diamond specifications and retailer prices

From $1,457 NZD
$820 USD
As of November 1, 2026
Save $1,529 NZD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,112 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2175512626. Listed at 10 retailers as of November 1, 2026, with a 105% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2175512626
Dimensions4.84 × 4.37 × 2.87 mm
L/W Ratio1.11
Top View
4.84 mm4.37 mm0.51 ctF / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 2175512626
Side View
Table 78.0%CrownGirdle: ThickPavilionCulet: NoneDepth 65.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,891 NZD|Low: $1,457 NZD|High: $3,022 NZD|Avg: $1,950 NZD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5$1,457 NZD
Retailer 9$1,496 NZD
Retailer 4$1,648 NZD
Retailer 7$1,671 NZD
Retailer 8$1,866 NZD
Retailer 1$1,891 NZD
Retailer 3$2,042 NZD
Retailer 6$2,453 NZD
Retailer 2$2,986 NZD

36 data points across 9 retailers

10 retailers$1,457 NZD to $2,986 NZD

B+
Cheapest Retailer
-
$1,457 NZD
$820 USD
B
Retailer 2
-
$1,648 NZD
$927 USD
View
B
Retailer 3
-
$1,671 NZD
$940 USD
View
B
Retailer 4
-
$1,813 NZD
$1,020 USD
View
B
Retailer 5
-
$1,813 NZD
$1,020 USD
View
B
Retailer 6
-
$1,866 NZD
$1,050 USD
View
B
Retailer 7
-
$1,891 NZD
£838 GBP
View
B
Retailer 8
-
$2,042 NZD
£905 GBP
View
B
Retailer 9
-
$2,986 NZD
£1,323 GBP
View
Most Expensive
NZ Jewellers
71d18f50-1a56-43fe-9206-c8821224c414 · Oct 17
$5,112 NZD
$2,876 USD
View
Price under review
9 more retailers have this diamond
Prices start from $1,457 NZDSave up to $1,529 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.

B+
0.51ct Radiant
$1,457 NZD