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Radiant|Lab Grown|IGI

1.51ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG645412586

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

Certificate IGI LG645412586

Diamond specifications and retailer prices

From $238 USD
As of November 2, 2026
Save $1,802 USD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,040 USD at Brilliant Earth · As of October 31, 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 LG645412586 or 645412586. Listed at 23 retailers as of October 31, 2026, with prices from $238 to $2,040, a $1,802 spread on the same certified stone. Brilliant Earth lists it at $2,040. 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 angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645412586
Dimensions8.25 × 5.61 × 3.79 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
8.25 mm5.61 mm1.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645412586
Side View
Table 66.0%Crown 43.6°Girdle: MED-STKPavilion 35.3°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
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: Nov 2
Current: $2,040 USD|Low: $238 USD|High: $2,040 USD|Avg: $688 USD
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 22
November 3, 2026
Retailer 4$238 USD
Retailer 11$266 USD
Retailer 21$276 USD
Retailer 9$295 USD
Retailer 20$295 USD
Retailer 16$328 USD
Retailer 19$452 USD
Retailer 8$497 USD
Retailer 17$509 USD
Retailer 7$525 USD
Retailer 2$558 USD
Retailer 10$621 USD
Retailer 13$689 USD
Retailer 22$948 USD
Retailer 3$951 USD
Retailer 12$1,000 USD
Retailer 6$1,075 USD
Retailer 15$1,164 USD
Retailer 18$1,181 USD
Retailer 14$1,199 USD
Retailer 5$1,314 USD
Brilliant Earth$2,040 USD

33 data points across 22 retailers

23 retailers$238 USD to $2,040 USD

A
Cheapest Retailer
-
$238 USD
A
Retailer 2
-
$266 USD
View
Final sale: no returns
A
Retailer 3
-
$276 USD
View
Retailer 4
-
$295 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$295 USD
View
A
Retailer 6
-
$328 USD
£258 GBP
View
A
Retailer 7
-
$452 USD
€430 EUR
View
A
Retailer 8
-
$497 USD
View
A
Retailer 9
-
$509 USD
ZAR 8,223 ZAR
View
A
Retailer 10
-
$525 USD
View
A
Retailer 11
-
$558 USD
£439 GBP
View
B+
Retailer 12
-
$621 USD
View
B+
Retailer 13
-
$689 USD
A$1,060 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 15 days ago
B
Retailer 19
-
$1,164 USD
View
B
Retailer 20
-
$1,181 USD
£930 GBP
View
B
Retailer 21
-
$1,199 USD
View
B
Retailer 22
-
$1,314 USD
View
Most Expensive
B
Brilliant Earth
11351641A · Oct 31
$2,040 USD
View
22 more retailers have this diamond
Prices start from $238 USDSave up to $1,802 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