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Radiant|Natural|IGI

1.51ct I IF Radiant Natural Diamond

VG • I/IF • IGI 773617342

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 773617342

Diamond specifications and retailer prices

From $4,909 AUD
As of November 6, 2026
Save $4,375 AUD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,673 AUD at NZ Jewellers · As of September 29, 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 I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI 773617342. Listed at 13 retailers as of November 2, 2026, with a 89% 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
I
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.1°
Pavilion angle28.2°
OriginNatural
Grading LabIGI
CertificateIGI 773617342
Dimensions7.62 × 5.50 × 3.82 mm
L/W Ratio1.39
Top View
7.62 mm5.50 mm1.51 ctI / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 773617342
Side View
Table 56.0%Crown 32.1°Girdle: ThickPavilion 28.2°CuletDepth 69.5%

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: Nov 6
Current: $5,728 AUD|Low: $3,916 AUD|High: $9,396 AUD|Avg: $5,772 AUD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 3$3,916 AUD
Retailer 4$4,240 AUD
Retailer 5$4,909 AUD
Retailer 11$4,929 AUD
Retailer 9$4,934 AUD
Retailer 10$5,124 AUD
Retailer 1$5,728 AUD
Retailer 2$5,765 AUD
Retailer 8$6,407 AUD
Retailer 6$6,776 AUD
Retailer 12$7,120 AUD
Retailer 7$9,284 AUD

37 data points across 12 retailers

13 retailers$4,909 AUD to $9,284 AUD

A
Cheapest Retailer
-
$4,909 AUD
A
Retailer 2
-
$4,929 AUD
View
A
Retailer 3
-
$4,934 AUD
View
A
Retailer 4
-
$5,124 AUD
View
Final sale: no returns
Retailer 5
-
$5,552 AUD
View
Price last confirmed 37 days ago
A
Retailer 6
-
$5,728 AUD
View
A
Retailer 7
-
$5,765 AUD
View
Retailer 8
-
$5,766 AUD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$6,407 AUD
View
A
Retailer 10
-
$6,776 AUD
View
B+
Retailer 11
-
$7,120 AUD
View
B+
Retailer 12
-
$9,284 AUD
View
Most Expensive
NZ Jewellers
ffa03cae-10b7-4fb8-a85c-200f15ccbe2d · Sep 29
$9,673 AUD
$6,646 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from $4,909 AUDSave up to $4,375 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
$4,909 AUD