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Radiant|Natural|GIA

0.51ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 2215721678

Certificate GIA 2215721678

Diamond specifications and retailer prices

From $1,455 AUD
As of November 5, 2026
Save $1,607 AUD (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,063 AUD at MOH London · As of November 4, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2215721678. Listed at 9 retailers as of November 4, 2026, with prices from $1,455 to $3,063, a $1,607 spread on the same certified stone. MOH London lists it at $3,063. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2215721678
Dimensions5.20 × 4.15 × 2.59 mm
L/W Ratio1.25
Culet sizeNone
Top View
5.20 mm4.15 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2215721678
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.3%

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 5
Current: $3,063 AUD|Low: $1,463 AUD|High: $3,109 AUD|Avg: $2,247 AUD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 6$1,463 AUD
Retailer 2$1,892 AUD
Retailer 5$2,100 AUD
Retailer 7$2,192 AUD
Retailer 3$2,333 AUD
Retailer 4$2,588 AUD
MOH London$3,063 AUD

45 data points across 7 retailers

9 retailers$1,455 AUD to $3,063 AUD

B+
Cheapest Retailer
-
$1,455 AUD
B+
Retailer 2
-
$1,463 AUD
View
B
Retailer 3
-
$1,658 AUD
View
B
Retailer 4
-
$1,892 AUD
View
B
Retailer 5
-
$2,100 AUD
View
Retailer 6
-
$2,192 AUD
View
Price last confirmed 34 days ago
B
Retailer 7
-
$2,333 AUD
View
B
Retailer 8
-
$2,588 AUD
View
Most Expensive
B
MOH London
C7EDCC138 · Nov 4
$3,063 AUD
£1,657 GBP
View
8 more retailers have this diamond
Prices start from $1,455 AUDSave up to $1,607 AUD

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
$1,455 AUD