Radiant|Natural|GIA

0.51ct D IF Radiant Natural Diamond

ID • D/IF • GIA 2557954542

Certificate GIA 2557954542

Diamond specifications and retailer prices

From $1,068 AUD
$750 USD
As of October 31, 2026
Save $1,031 AUD (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,612 AUD at NZ Jewellers · As of September 29, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557954542. Listed at 10 retailers as of October 31, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle46.21°
Pavilion angle31.57°
OriginNatural
Grading LabGIA
CertificateGIA 2557954542
Dimensions5.90 × 4.05 × 2.45 mm
L/W Ratio1.46
Girdle conditionSlightly Thick
Key to symbols
Minor Details of Polish
Top View
5.90 mm4.05 mm0.51 ctD / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2557954542
Side View
Table 70.0%Crown 46.21°GirdlePavilion 31.57°CuletDepth 60.5%

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: Oct 31
Current: $1,293 AUD|Low: $1,068 AUD|High: $2,135 AUD|Avg: $1,555 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3$1,068 AUD
Retailer 1$1,293 AUD
Retailer 4$1,388 AUD
Retailer 5$1,732 AUD
Retailer 2$2,099 AUD

37 data points across 5 retailers

10 retailers$1,068 AUD to $2,099 AUD

A
Cheapest Retailer
-
$1,068 AUD
$750 USD
Retailer 2
-
$1,152 AUD
$809 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$1,152 AUD
$809 USD
View
Price last confirmed 40 days ago
Retailer 4
-
$1,196 AUD
$840 USD
View
Price last confirmed 32 days ago
A
Retailer 5
-
$1,293 AUD
£715 GBP
View
A
Retailer 6
-
$1,388 AUD
$975 USD
View
Retailer 7
-
$1,732 AUD
View
Price last confirmed 28 days ago
B+
Retailer 8
-
$2,099 AUD
£1,161 GBP
View
Retailer 9
-
$3,612 AUD
$2,537 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
21b98894-6ed0-4fc5-afce-23bb7cbeeeb6 · Sep 29
$3,612 AUD
$2,537 USD
View
Price last confirmed 33 days ago
9 more retailers have this diamond
Prices start from $1,068 AUDSave up to $1,031 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
$1,068 AUD