Radiant|Lab Grown|IGI

1.51ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG508151920

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

Certificate IGI LG508151920

Diamond specifications and retailer prices

From $422 USD
As of November 3, 2026
Save $2,129 USD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,980 USD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508151920 or 508151920. Listed at 23 retailers as of November 3, 2026, with a 505% 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
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508151920
Dimensions7.76 × 5.70 × 3.90 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.76 mm5.70 mm1.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508151920
Side View
Table 67.0%Crown 44.1°Girdle: STK-THKPavilion 37°Culet: NoneDepth 68.4%

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 3
Current: $3,980 USD|Low: $430 USD|High: $3,980 USD|Avg: $1,311 USD
Do Amore Diamonds
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
November 5, 2026
Retailer 5$448 USD
Retailer 9$501 USD
Retailer 17$502 USD
Retailer 3$555 USD
Retailer 4$555 USD
Retailer 11$714 USD
Retailer 8$871 USD
Retailer 14$990 USD
Retailer 10$1,010 USD
Retailer 12$1,057 USD
Retailer 16$1,493 USD
Retailer 7$1,612 USD
Retailer 15$1,670 USD
Retailer 6$2,078 USD
Retailer 13$2,312 USD
Retailer 2$2,551 USD
Do Amore Diamonds$3,980 USD

40 data points across 17 retailers

23 retailers$422 USD to $2,551 USD

A
Cheapest Retailer
-
$422 USD
A
Retailer 2
-
$448 USD
View
A
Retailer 3
-
$501 USD
View
Final sale: no returns
A
Retailer 4
-
$502 USD
View
Retailer 5
-
$555 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$555 USD
View
B+
Retailer 7
-
$700 USD
View
B+
Retailer 8
-
$714 USD
View
B+
Retailer 9
-
$793 USD
View
B+
Retailer 10
-
$871 USD
View
Retailer 11
-
$990 USD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
$1,010 USD
View
B+
Retailer 13
-
$1,057 USD
View
B
Retailer 14
-
$1,485 USD
View
B
Retailer 15
-
$1,493 USD
View
B
Retailer 16
-
$1,612 USD
View
B
Retailer 17
-
$1,670 USD
View
B
Retailer 18
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$1,783 USD
View
B
Retailer 19
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$2,078 USD
View
B
Retailer 20
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$2,114 USD
View
B
Retailer 21
-
$2,312 USD
View
B
Retailer 22
-
$2,551 USD
View
Most Expensive
Do Amore Diamonds
27-9D9268BDC · Nov 4
$3,980 USD
View
Price under review
22 more retailers have this diamond
Prices start from $422 USDSave up to $2,129 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
$422 USD