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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

GD • E/SI2 • GIA 5526856383

Certificate GIA 5526856383

Diamond specifications and retailer prices

From $4,559 AUD
₹305,042 INR
As of October 29, 2026
Save $5,145 AUD (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $12,391 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5526856383. Listed at 12 retailers as of October 29, 2026, with a 113% 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

1.51
Carat
E
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5526856383
Dimensions7.70 × 5.53 × 3.77 mm
L/W Ratio1.39
Top View
7.70 mm5.53 mm1.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5526856383
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.3%

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 29
Current: $5,454 AUD|Low: $4,550 AUD|High: $11,942 AUD|Avg: $6,482 AUD|-22.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 3$4,559 AUD
Retailer 7$5,077 AUD
Retailer 6$5,326 AUD
Retailer 1$5,454 AUD
Retailer 2$5,903 AUD
Retailer 8$6,355 AUD
Retailer 5$6,522 AUD
Retailer 4$9,704 AUD

41 data points across 8 retailers

12 retailers$4,559 AUD to $9,704 AUD

A
Cheapest Retailer
-
$4,559 AUD
₹305,042 INR
A
Retailer 2
-
$5,077 AUD
$3,567 USD
View
A
Retailer 3
-
$5,326 AUD
$3,742 USD
View
Final sale: no returns
A
Retailer 4
-
$5,454 AUD
£3,017 GBP
View
A
Retailer 5
-
$5,903 AUD
£3,266 GBP
View
A
Retailer 6
-
$6,355 AUD
$4,465 USD
View
Retailer 7
-
$6,400 AUD
$4,496 USD
View
Price last confirmed 73 days ago
A
Retailer 8
-
$6,522 AUD
€4,364 EUR
View
Retailer 9
-
$7,407 AUD
$5,204 USD
View
Price last confirmed 39 days ago
Retailer 10
-
$8,548 AUD
$6,005 USD
View
Price last confirmed 38 days ago
B+
Retailer 11
-
$9,704 AUD
£5,368 GBP
View
Most Expensive
NZ Jewellers
e1506cdc-c016-429b-9b71-31504b463dd4 · Sep 20
$12,391 AUD
$8,705 USD
View
Price last confirmed 39 days ago
11 more retailers have this diamond
Prices start from $4,559 AUDSave up to $5,145 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
1.51ct Radiant
$4,559 AUD