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Radiant|Natural|GIA

0.51ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 7456368502

Certificate GIA 7456368502

Diamond specifications and retailer prices

From $1,429 AUD
As of November 5, 2026
Save $1,519 AUD (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,934 AUD at NZ Jewellers · As of November 5, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7456368502. Listed at 17 retailers as of November 4, 2026, with a 106% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7456368502
Dimensions5.99 × 4.39 × 2.30 mm
L/W Ratio1.36
Top View
5.99 mm4.39 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7456368502
Side View
Table 64.0%CrownGirdle: Extremely ThinPavilionCulet: NoneDepth 52.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,934 AUD|Low: $1,412 AUD|High: $3,934 AUD|Avg: $2,025 AUD
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 7, 2026
Retailer 4$1,412 AUD
Retailer 5$1,429 AUD
Retailer 6$1,447 AUD
Retailer 14$1,461 AUD
Retailer 15$1,461 AUD
Retailer 11$1,518 AUD
Retailer 12$1,685 AUD
Retailer 2$1,819 AUD
Retailer 8$1,969 AUD
Retailer 3$2,020 AUD
Retailer 7$2,084 AUD
Retailer 9$2,246 AUD
Retailer 10$2,489 AUD
Retailer 13$2,949 AUD
NZ Jewellers$3,934 AUD

31 data points across 15 retailers

17 retailers$1,429 AUD to $2,949 AUD

Retailer 1
-
$1,412 AUD
Price last confirmed 10 days ago
B
Retailer 2
-
$1,429 AUD
View
B
Retailer 3
-
$1,447 AUD
View
Retailer 4
-
$1,461 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$1,461 AUD
View
B
Retailer 6
-
$1,518 AUD
View
B
Retailer 7
-
$1,601 AUD
View
B
Retailer 8
-
$1,617 AUD
View
B
Retailer 9
-
$1,685 AUD
View
B
Retailer 10
-
$1,819 AUD
View
B
Retailer 11
-
$1,969 AUD
View
B
Retailer 12
-
$2,020 AUD
View
Retailer 13
-
$2,084 AUD
View
Price last confirmed 39 days ago
B
Retailer 14
-
$2,246 AUD
View
B
Retailer 15
-
$2,489 AUD
View
B
Retailer 16
-
$2,949 AUD
View
Most Expensive
NZ Jewellers
dd414ce9-e5fe-4936-a423-9b08bc52fde9 · Nov 5
$3,934 AUD
$2,703 USD
View
Price under review
16 more retailers have this diamond
Prices start from $1,429 AUDSave up to $1,519 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
$1,429 AUD