Radiant|Lab Grown|IGI

1.28ct E VVS1 Radiant Lab Grown Diamond

EX • E/VVS1 • IGI LG651420471

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

Certificate IGI LG651420471

Diamond specifications and retailer prices

From $237 USD
As of October 28, 2026
Save $1,193 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,430 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG651420471 or 651420471. Listed at 19 retailers as of October 28, 2026, with prices from $237 to $1,430, a $1,193 spread on the same certified stone. Brilliant Earth lists it at $1,430. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG651420471
Dimensions7.67 × 5.33 × 3.61 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.67 mm5.33 mm1.28 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG651420471
Side View
Table 65.0%Crown 44.1°Girdle: MediumPavilion 34.4°Culet: NoneDepth 67.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $1,430 USD|Low: $237 USD|High: $1,530 USD|Avg: $662 USD|-6.5%
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
October 29, 2026
Retailer 3$237 USD
Retailer 6$246 USD
Retailer 7$259 USD
Retailer 19$263 USD
Retailer 18$323 USD
Retailer 4$451 USD
Retailer 13$451 USD
Retailer 2$485 USD
Retailer 17$486 USD
Retailer 8$583 USD
Retailer 9$616 USD
Retailer 14$642 USD
Retailer 15$847 USD
Retailer 16$890 USD
Retailer 11$897 USD
Retailer 10$960 USD
Retailer 12$1,058 USD
Retailer 5$1,231 USD
Brilliant Earth$1,430 USD

38 data points across 19 retailers

19 retailers$237 USD to $1,430 USD

A
Cheapest Retailer
-
$237 USD
Final sale: no returns
A
Retailer 2
-
$246 USD
View
Price last confirmed 32 days ago
A
Retailer 3
-
$259 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$263 USD
View
A
Retailer 5
-
$263 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$323 USD
£254 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
$451 USD
View
A
Retailer 8
-
$451 USD
ZAR 7,286 ZAR
View
A
Retailer 9
-
$485 USD
£382 GBP
View
A
Retailer 10
-
$486 USD
€463 EUR
View
B+
Retailer 11
-
$583 USD
View
B+
Retailer 12
-
$616 USD
View
B+
Retailer 13
-
$642 USD
A$987 AUD
View
B+
Retailer 14
-
$847 USD
View
B+
Retailer 15
-
$890 USD
View
Price last confirmed 8 days ago
B
Retailer 16
-
$897 USD
View
B
Retailer 17
-
$1,058 USD
£833 GBP
View
B
Retailer 18
-
$1,231 USD
View
Most Expensive
B
Brilliant Earth
12197745A · Oct 28
$1,430 USD
View
18 more retailers have this diamond
Prices start from $237 USDSave up to $1,193 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
1.28ct Radiant
$237 USD