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Radiant|Natural|GIA

0.51ct F SI2 Radiant Natural Diamond

GD • F/SI2 • GIA 6194957280

Certificate GIA 6194957280

Diamond specifications and retailer prices

From $1,153 NZD
£511 GBP
As of November 2, 2026
Save $971 NZD (46%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,124 NZD at MOH London · As of November 2, 2026
View at MOH London

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6194957280. Listed at 4 retailers as of November 2, 2026, with prices from $1,153 to $2,124, a $971 spread on the same certified stone. MOH London lists it at $2,124. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6194957280
Dimensions4.53 × 4.18 × 3.29 mm
L/W Ratio1.08
Top View
4.53 mm4.18 mm0.51 ctF / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6194957280
Side View
Table 76.0%CrownGirdle: THN-VTHPavilionCulet: NoneDepth 78.6%

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 2
Current: $2,124 NZD|Low: $1,089 NZD|High: $2,151 NZD|Avg: $1,453 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4$1,153 NZD
Retailer 2$1,164 NZD
Retailer 3$1,375 NZD
MOH London$2,124 NZD

41 data points across 4 retailers

4 retailers$1,153 NZD to $2,124 NZD

B+
Cheapest Retailer
-
$1,153 NZD
£511 GBP
B+
Retailer 2
-
$1,164 NZD
£516 GBP
View
B+
Retailer 3
-
$1,375 NZD
€737 EUR
View
Most Expensive
C
MOH London
588DEBA1F · Nov 2
$2,124 NZD
£941 GBP
View
3 more retailers have this diamond
Prices start from $1,153 NZDSave up to $971 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
$1,153 NZD