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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 $316 USD
As of October 30, 2026
Save $1,099 USD (78%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,437 USD 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 October 29, 2026, with a 348% 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
Color
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

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,437 USD|Low: $300 USD|High: $1,444 USD|Avg: $840 USD|+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
October 31, 2026
Retailer 3$316 USD
Retailer 6$332 USD
Retailer 11$510 USD
Retailer 4$571 USD
Retailer 8$579 USD
Retailer 2$620 USD
Retailer 13$687 USD
Retailer 5$773 USD
Retailer 9$1,011 USD
Retailer 7$1,079 USD
Retailer 10$1,179 USD
Retailer 14$1,351 USD
Retailer 12$1,415 USD
Novita Diamonds$1,437 USD

41 data points across 14 retailers

21 retailers$316 USD to $1,415 USD

Retailer 1
-
$264 USD
Price last confirmed 23 days ago
Retailer 2
-
$264 USD
View
Price last confirmed 31 days ago
Retailer 3
-
$306 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
$316 USD
View
Final sale: no returns
Retailer 5
-
$323 USD
View
Price last confirmed 32 days ago
Retailer 6
-
$327 USD
View
Price last confirmed 23 days ago
Retailer 7
-
$327 USD
View
Price last confirmed 28 days ago
A
Retailer 8
-
$332 USD
View
A
Retailer 9
-
$510 USD
View
A
Retailer 10
-
$571 USD
ZAR 9,226 ZAR
View
A
Retailer 11
-
$579 USD
View
A
Retailer 12
-
$620 USD
£488 GBP
View
A
Retailer 13
-
$687 USD
View
A
Retailer 14
-
$773 USD
A$1,189 AUD
View
A
Retailer 15
-
$1,011 USD
View
Retailer 16
-
$1,050 USD
View
Price last confirmed 31 days ago
B+
Retailer 17
-
$1,079 USD
View
B+
Retailer 18
-
$1,179 USD
View
B+
Retailer 19
-
$1,351 USD
View
B+
Retailer 20
-
$1,415 USD
£1,114 GBP
View
Most Expensive
Novita Diamonds
cert_783630221 · Oct 8
$1,437 USD
A$2,211 AUD
View
Price last confirmed 23 days ago
20 more retailers have this diamond
Prices start from $316 USDSave up to $1,099 USD

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
$316 USD