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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG783630221

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

Certificate IGI LG783630221

Diamond specifications and retailer prices

From $451 AUD
$316 USD
As of November 1, 2026
Save $1,557 AUD (78%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,051 AUD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG783630221 or 783630221. Listed at 21 retailers as of November 1, 2026, with a 345% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle28.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783630221
Dimensions8.43 × 5.43 × 3.59 mm
L/W Ratio1.55
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.43 mm5.43 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783630221
Side View
Table 63.0%Crown 42°Girdle: MED-STKPavilion 28.2°Culet: NoneDepth 66.1%

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: $2,051 AUD|Low: $428 AUD|High: $2,061 AUD|Avg: $1,189 AUD|+1.0%
Novita Diamonds
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
November 2, 2026
Retailer 4$451 AUD
Retailer 6$474 AUD
Retailer 13$728 AUD
Retailer 10$826 AUD
Retailer 7$864 AUD
Retailer 2$884 AUD
Retailer 14$980 AUD
Retailer 5$1,103 AUD
Retailer 11$1,443 AUD
Retailer 9$1,540 AUD
Retailer 12$1,682 AUD
Retailer 3$1,928 AUD
Retailer 8$2,008 AUD
Novita Diamonds$2,051 AUD

41 data points across 14 retailers

21 retailers$451 AUD to $2,008 AUD

Retailer 1
-
$377 AUD
$264 USD
Price last confirmed 25 days ago
Retailer 2
-
$377 AUD
$264 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$437 AUD
$306 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$451 AUD
$316 USD
View
Final sale: no returns
Retailer 5
-
$461 AUD
$323 USD
View
Price last confirmed 34 days ago
Retailer 6
-
$467 AUD
$327 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$467 AUD
$327 USD
View
Price last confirmed 30 days ago
Retailer 8
-
$474 AUD
$332 USD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$728 AUD
$510 USD
View
A
Retailer 10
-
$826 AUD
$579 USD
View
A
Retailer 11
-
$864 AUD
ZAR 9,780 ZAR
View
A
Retailer 12
-
$884 AUD
£488 GBP
View
A
Retailer 13
-
$980 AUD
$687 USD
View
A
Retailer 14
-
$1,103 AUD
View
A
Retailer 15
-
$1,443 AUD
$1,011 USD
View
Retailer 16
-
$1,498 AUD
$1,050 USD
View
Price last confirmed 32 days ago
B+
Retailer 17
-
$1,540 AUD
$1,079 USD
View
B+
Retailer 18
-
$1,682 AUD
$1,179 USD
View
B+
Retailer 19
-
$1,928 AUD
$1,351 USD
View
B+
Retailer 20
-
$2,008 AUD
£1,108 GBP
View
Most Expensive
Novita Diamonds
cert_783630221 · Oct 8
$2,051 AUD
View
Price last confirmed 25 days ago
20 more retailers have this diamond
Prices start from $451 AUDSave up to $1,557 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
$451 AUD