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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 $649 USD
£511 GBP
As of November 2, 2026
Save $546 USD (46%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,195 USD 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 $649 to $1,195, a $546 spread on the same certified stone. MOH London lists it at $1,195. 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
Color
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: $1,195 USD|Low: $613 USD|High: $1,210 USD|Avg: $815 USD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4$649 USD
Retailer 2$655 USD
Retailer 3$774 USD
MOH London$1,195 USD

42 data points across 4 retailers

4 retailers$649 USD to $1,195 USD

B+
Cheapest Retailer
-
$649 USD
£511 GBP
B+
Retailer 2
-
$655 USD
£516 GBP
View
B+
Retailer 3
-
$774 USD
€737 EUR
View
Most Expensive
C
MOH London
588DEBA1F · Nov 2
$1,195 USD
£941 GBP
View
3 more retailers have this diamond
Prices start from $649 USDSave up to $546 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.

B+
0.51ct Radiant
$649 USD