CaratHunter
Plans
Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG622458506

Certificate IGI LG622458506

Diamond specifications and retailer prices

From $290 USD
Save $3,080 USD (91%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,370 USD at Brilliant Earth
View at Brilliant Earth

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG622458506 or 622458506. Listed at 26 retailers, with prices from $290 to $3,370 at Brilliant Earth, a $3,080 spread on the same certified stone. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622458506
Dimensions5.73 × 5.73 × 7.98 mm
L/W Ratio1.00
Culet sizePointed
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
5.73 mm5.73 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622458506
Side View
Table 63.0%Crown 41.8°Girdle: MediumPavilion 35.2°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $3,370 USD|Low: $231 USD|High: $4,260 USD|Avg: $1,158 USD|-20.9%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 1, 2026
Retailer 14$347 USD
Retailer 13$458 USD
Retailer 16$510 USD
Retailer 15$525 USD
Retailer 6$620 USD
Retailer 4$632 USD
Retailer 3$669 USD
Retailer 17$701 USD
Retailer 8$788 USD
Retailer 9$897 USD
Retailer 20$922 USD
Retailer 18$1,010 USD
Retailer 12$1,440 USD
Retailer 11$1,478 USD
Retailer 7$1,514 USD
Retailer 5$1,536 USD
Retailer 19$1,612 USD
Retailer 2$1,645 USD
Retailer 10$2,580 USD
Brilliant Earth$3,370 USD

42 data points across 20 retailers

26 retailers$290 USD to $3,370 USD

A
Cheapest Retailer
-
$290 USD
A
Retailer 2
-
$337 USD
View
A
Retailer 3
-
$347 USD
View
A
Retailer 4
-
$355 USD
View
A
Retailer 5
-
$458 USD
View
A
Retailer 6
-
$510 USD
View
A
Retailer 7
-
$525 USD
HK$4,100 HKD
View
A
Retailer 8
-
$620 USD
View
A
Retailer 9
-
$632 USD
€602 EUR
View
A
Retailer 10
-
$669 USD
ZAR 10,804 ZAR
View
A
Retailer 11
-
$688 USD
£541 GBP
View
Price last confirmed 21 days ago
A
Retailer 12
-
$702 USD
£553 GBP
View
A
Retailer 13
-
$788 USD
View
A
Retailer 14
-
$897 USD
View
A
Retailer 15
-
$922 USD
A$1,419 AUD
View
A
Retailer 16
-
$1,010 USD
View
B+
Retailer 17
-
$1,277 USD
View
B+
Retailer 18
-
$1,440 USD
View
B+
Retailer 19
-
$1,478 USD
View
B+
Retailer 20
-
$1,514 USD
View
B+
Retailer 21
-
$1,536 USD
SGD 2,075 SGD
View
B+
Retailer 22
-
$1,612 USD
£1,269 GBP
View
B+
Retailer 23
-
$1,645 USD
A$2,530 AUD
View
B
Retailer 24
-
$2,426 USD
View
B
Retailer 25
-
$2,580 USD
View
Most Expensive
B
Brilliant Earth
10093566Y · Sep 29
$3,370 USD
View
25 more retailers have this diamond
Prices start from $290 USDSave up to $3,080 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.

A
1.51ct Radiant
$290 USD