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Radiant|Lab Grown|IGI

1.28ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG514252408

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

Certificate IGI LG514252408

Diamond specifications and retailer prices

From $917 USD
As of November 2, 2026
Save $1,039 USD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,177 USD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG514252408 or 514252408. Listed at 15 retailers as of November 2, 2026, with a 113% 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

1.28
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle29.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514252408
Dimensions7.62 × 5.39 × 3.42 mm
L/W Ratio1.41
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
7.62 mm5.39 mm1.28 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514252408
Side View
Table 64.5%Crown 38.7°Girdle: MED-STKPavilion 29.3°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,956 USD|Low: $880 USD|High: $3,649 USD|Avg: $1,985 USD|+2.5%
Retailer 1
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
Reve Diamonds
November 3, 2026
Retailer 13$917 USD
Retailer 3$997 USD
Retailer 5$1,026 USD
Retailer 4$1,063 USD
Retailer 15$1,063 USD
Retailer 14$1,230 USD
Retailer 11$1,240 USD
Retailer 7$1,563 USD
Retailer 16$1,704 USD
Retailer 1$1,956 USD
Retailer 12$2,366 USD
Retailer 10$2,770 USD
Retailer 6$2,941 USD
Retailer 2$2,990 USD
Retailer 8$3,045 USD
Reve Diamonds$3,177 USD
Retailer 9$3,606 USD

28 data points across 17 retailers

15 retailers$917 USD to $1,956 USD

B+
Cheapest Retailer
-
$917 USD
B
Retailer 2
-
$997 USD
View
B
Retailer 3
-
$1,026 USD
View
Final sale: no returns
Retailer 4
-
$1,063 USD
View
Price last confirmed 18 days ago
B
Retailer 5
-
$1,063 USD
View
B
Retailer 6
-
$1,230 USD
View
B
Retailer 7
-
$1,240 USD
View
B
Retailer 8
-
$1,704 USD
View
B
Retailer 9
-
$1,956 USD
View
Retailer 10
-
$2,366 USD
View
Price under review
Retailer 11
-
$2,770 USD
View
Price under review
Retailer 12
-
$2,941 USD
View
Price under review
Retailer 13
-
$2,990 USD
View
Price under review
Most Expensive
Reve Diamonds
A1E1C30B9 · Nov 1
$3,177 USD
View
Price under review
13 more retailers have this diamond
Prices start from $917 USDSave up to $1,039 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.

B+
1.28ct Radiant
$917 USD