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Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG818644542

Shape and cutting style on the report: Cut cornered rectangular antique cut

Certificate IGI LG818644542

Diamond specifications and retailer prices

From $1,168 USD
As of October 30, 2026
Save $3,574 USD (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,742 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818644542 or 818644542. Listed at 18 retailers as of October 30, 2026, with prices from $1,168 to $4,742, a $3,574 spread on the same certified stone. Taylor and Hart lists it at $4,742. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644542
Dimensions7.44 × 6.60 × 3.82 mm
L/W Ratio1.13
Culet sizeLarge
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.44 mm6.60 mm1.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644542
Side View
Table 71.0%Crown 36.2°Girdle: STK-THKPavilion 40.6°Culet: LargeDepth 57.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,964 USD|Low: $1,121 USD|High: $4,536 USD|Avg: $2,578 USD|-1.1%
Retailer 1
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 30, 2026
Retailer 11$1,168 USD
Retailer 4$1,270 USD
Retailer 10$1,308 USD
Retailer 12$1,354 USD
Retailer 9$1,530 USD
Retailer 1$1,964 USD
Retailer 14$2,151 USD
Retailer 7$2,490 USD
Retailer 2$2,539 USD
Retailer 3$2,669 USD
Retailer 6$3,734 USD
Retailer 13$3,921 USD
Retailer 8$4,357 USD
Retailer 5$4,536 USD

45 data points across 14 retailers

18 retailers$1,168 USD to $4,742 USD

B+
Cheapest Retailer
-
$1,168 USD
B+
Retailer 2
-
$1,270 USD
View
Retailer 3
-
$1,308 USD
View
Price last confirmed 19 days ago
Final sale: no returns
B+
Retailer 4
-
$1,310 USD
View
Retailer 5
-
$1,354 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$1,354 USD
View
B+
Retailer 7
-
$1,530 USD
View
B+
Retailer 8
-
$1,964 USD
£1,547 GBP
View
B
Retailer 9
-
$2,151 USD
View
B
Retailer 10
-
$2,490 USD
ZAR 40,220 ZAR
View
B
Retailer 11
-
$2,539 USD
View
B
Retailer 12
-
$2,669 USD
View
B
Retailer 13
-
$3,734 USD
£2,940 GBP
View
B
Retailer 14
-
$3,921 USD
View
B
Retailer 15
-
$4,281 USD
View
B
Retailer 16
-
$4,357 USD
£3,431 GBP
View
B
Retailer 17
-
$4,536 USD
SGD 6,130 SGD
View
Most Expensive
B
Taylor and Hart
APY38XB · Oct 30
$4,742 USD
View
17 more retailers have this diamond
Prices start from $1,168 USDSave up to $3,574 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.

B+
1.51ct Radiant
$1,168 USD