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Radiant|Natural|GIA

0.51ct D IF Radiant Natural Diamond

GD • D/IF • GIA 6551234500

Certificate GIA 6551234500

Diamond specifications and retailer prices

From $984 AUD
HK$5,400 HKD
As of November 1, 2026
Save $3,171 AUD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,155 AUD at NZ Jewellers · As of October 30, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551234500. Listed at 16 retailers as of October 30, 2026, with prices from $984 to $4,155, a $3,171 spread on the same certified stone. NZ Jewellers lists it at $4,155. 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
D
Colour
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551234500
Dimensions5.32 × 3.98 × 2.74 mm
L/W Ratio1.34
Top View
5.32 mm3.98 mm0.51 ctD / IF
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6551234500
Side View
Table 67.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 68.9%

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 1
Current: $4,155 AUD|Low: $984 AUD|High: $4,311 AUD|Avg: $1,661 AUD|-3.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 6$984 AUD
Retailer 8$989 AUD
Retailer 15$1,029 AUD
Retailer 10$1,225 AUD
Retailer 3$1,241 AUD
Retailer 9$1,325 AUD
Retailer 11$1,345 AUD
Retailer 5$1,388 AUD
Retailer 7$1,394 AUD
Retailer 12$1,422 AUD
Retailer 13$1,526 AUD
Retailer 2$1,719 AUD
Retailer 14$1,749 AUD
Retailer 4$2,471 AUD
NZ Jewellers$4,155 AUD

25 data points across 15 retailers

16 retailers$984 AUD to $4,155 AUD

A
Cheapest Retailer
-
$984 AUD
HK$5,400 HKD
A
Retailer 2
-
$989 AUD
₹66,189 INR
View
A
Retailer 3
-
$1,029 AUD
$723 USD
View
Final sale: no returns
A
Retailer 4
-
$1,225 AUD
€819 EUR
View
A
Retailer 5
-
$1,241 AUD
$872 USD
View
A
Retailer 6
-
$1,325 AUD
$931 USD
View
A
Retailer 7
-
$1,345 AUD
$945 USD
View
Retailer 8
-
$1,388 AUD
SGD 1,318 SGD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$1,394 AUD
$979 USD
View
B+
Retailer 10
-
$1,422 AUD
$999 USD
View
B+
Retailer 11
-
$1,526 AUD
$1,072 USD
View
B+
Retailer 12
-
$1,719 AUD
€1,150 EUR
View
B+
Retailer 13
-
$1,749 AUD
£967 GBP
View
Retailer 14
-
$2,092 AUD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$2,471 AUD
£1,367 GBP
View
Most Expensive
B
NZ Jewellers
87dab150-77a9-465f-878a-5b067b58645c · Oct 30
$4,155 AUD
$2,919 USD
View
15 more retailers have this diamond
Prices start from $984 AUDSave up to $3,171 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.

A
0.51ct Radiant
$984 AUD