Radiant|Lab Grown|IGI

1.51ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG647447909

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

Certificate IGI LG647447909

Diamond specifications and retailer prices

From $238 USD
As of October 30, 2026
Save $1,076 USD (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,150 USD at Brilliant Earth · As of October 14, 2026
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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG647447909 or 647447909. Listed at 23 retailers as of October 30, 2026, with a 452% 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
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647447909
Dimensions8.24 × 5.62 × 3.80 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm5.62 mm1.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647447909
Side View
Table 66.0%Crown 43.6°Girdle: MediumPavilion 35.1°Culet: NoneDepth 67.6%

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: Oct 30
Current: $2,150 USD|Low: $238 USD|High: $2,150 USD|Avg: $731 USD
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
Retailer 21
Retailer 22
October 31, 2026
Retailer 3$238 USD
Retailer 11$266 USD
Retailer 19$276 USD
Retailer 5$295 USD
Retailer 6$295 USD
Retailer 22$330 USD
Retailer 2$452 USD
Retailer 12$497 USD
Retailer 17$506 USD
Retailer 9$525 USD
Retailer 13$553 USD
Retailer 7$621 USD
Retailer 18$687 USD
Retailer 4$948 USD
Retailer 20$951 USD
Retailer 10$1,000 USD
Retailer 21$1,075 USD
Retailer 15$1,164 USD
Retailer 16$1,187 USD
Retailer 8$1,199 USD
Retailer 14$1,314 USD
Brilliant Earth$2,150 USD

33 data points across 22 retailers

23 retailers$238 USD to $1,314 USD

A
Cheapest Retailer
-
$238 USD
A
Retailer 2
-
$266 USD
View
Final sale: no returns
A
Retailer 3
-
$276 USD
View
A
Retailer 4
-
$295 USD
View
A
Retailer 5
-
$295 USD
View
Retailer 6
-
$330 USD
£260 GBP
View
Price last confirmed 14 days ago
A
Retailer 7
-
$452 USD
€430 EUR
View
A
Retailer 8
-
$497 USD
View
A
Retailer 9
-
$506 USD
ZAR 8,182 ZAR
View
A
Retailer 10
-
$525 USD
View
A
Retailer 11
-
$553 USD
£435 GBP
View
B+
Retailer 12
-
$621 USD
View
B+
Retailer 13
-
$687 USD
A$1,057 AUD
View
B
Retailer 14
-
$948 USD
View
B
Retailer 15
-
$951 USD
View
B+
Retailer 16
-
$970 USD
£764 GBP
View
B+
Retailer 17
-
$1,000 USD
View
Retailer 18
-
$1,075 USD
View
Price last confirmed 12 days ago
B
Retailer 19
-
$1,164 USD
View
B
Retailer 20
-
$1,187 USD
£935 GBP
View
B
Retailer 21
-
$1,199 USD
View
B
Retailer 22
-
$1,314 USD
View
Most Expensive
Brilliant Earth
11455390A · Oct 14
$2,150 USD
View
Price last confirmed 17 days ago
22 more retailers have this diamond
Prices start from $238 USDSave up to $1,076 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
$238 USD