CaratHunter
Plans
Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG658497783

Certificate IGI LG658497783

Diamond specifications and retailer prices

From $320 USD
Save $2,285 USD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $2,605 USD at Rare Carat
View at Rare Carat

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 LG658497783 or 658497783. Listed at 26 retailers, with prices from $320 to $2,605 at Rare Carat, a $2,285 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG658497783
Dimensions5.68 × 5.68 × 8.40 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
5.68 mm5.68 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG658497783
Side View
Table 63.0%Crown 42.6°Girdle: MediumPavilion 33.3°Culet: NoneDepth 65.7%

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: $2,605 USD|Low: $255 USD|High: $2,605 USD|Avg: $1,105 USD|+5.9%
Rare Carat
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
September 30, 2026
Retailer 13$381 USD
Retailer 2$458 USD
Retailer 14$461 USD
Retailer 15$600 USD
Retailer 4$632 USD
Retailer 6$655 USD
Retailer 3$669 USD
Retailer 16$701 USD
Retailer 10$897 USD
Retailer 20$922 USD
Retailer 8$1,017 USD
Retailer 17$1,068 USD
Retailer 9$1,298 USD
Retailer 12$1,323 USD
Retailer 5$1,331 USD
Retailer 11$1,578 USD
Retailer 18$1,612 USD
Retailer 19$1,616 USD
Retailer 7$1,643 USD
Rare Carat$2,605 USD

40 data points across 20 retailers

26 retailers$320 USD to $2,605 USD

A
Cheapest Retailer
-
$320 USD
A
Retailer 2
-
$372 USD
View
A
Retailer 3
-
$381 USD
View
A
Retailer 4
-
$392 USD
View
A
Retailer 5
-
$458 USD
View
A
Retailer 6
-
$461 USD
HK$3,600 HKD
View
A
Retailer 7
-
$600 USD
View
A
Retailer 8
-
$632 USD
€602 EUR
View
A
Retailer 9
-
$655 USD
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
-
$897 USD
View
A
Retailer 14
-
$922 USD
A$1,419 AUD
View
A
Retailer 15
-
$1,017 USD
View
A
Retailer 16
-
$1,068 USD
View
B+
Retailer 17
-
$1,277 USD
View
B+
Retailer 18
-
$1,323 USD
View
B+
Retailer 19
-
$1,324 USD
View
B+
Retailer 20
-
$1,331 USD
SGD 1,799 SGD
View
B+
Retailer 21
-
$1,578 USD
View
B+
Retailer 22
-
$1,612 USD
£1,269 GBP
View
B+
Retailer 23
-
$1,616 USD
A$2,486 AUD
View
B+
Retailer 24
-
$1,643 USD
View
B
Retailer 25
-
$2,426 USD
View
Most Expensive
B
Rare Carat
1137-48 · Sep 28
$2,605 USD
View
25 more retailers have this diamond
Prices start from $320 USDSave up to $2,285 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
$320 USD