Radiant|Lab Grown|IGI

1.28ct E VS2 Radiant Lab Grown Diamond

VG • E/VS2 • IGI LG636401233

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

Certificate IGI LG636401233

Diamond specifications and retailer prices

From $723 USD
£569 GBP
As of October 28, 2026
5 retailers carry this diamond
Most expensive: $900 USD at Brilliant Earth · As of October 3, 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 VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG636401233 or 636401233. Listed at 5 retailers as of October 28, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
E
Color
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG636401233
Dimensions7.60 × 5.34 × 3.66 mm
L/W Ratio1.42
Culet sizePointed
Top View
7.60 mm5.34 mm1.28 ctE / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636401233
Side View
Table 65.0%Crown 33.3°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 68.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $900 USD|Low: $209 USD|High: $1,082 USD|Avg: $613 USD|-4.3%
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
October 1, 2026
Retailer 8$209 USD
Retailer 10$220 USD
Retailer 9$223 USD
Retailer 4$370 USD
Retailer 7$391 USD
Retailer 2$397 USD
Retailer 13$477 USD
Retailer 12$548 USD
Retailer 11$645 USD
Retailer 3$771 USD
Brilliant Earth$900 USD
Retailer 6$1,055 USD
Retailer 5$1,082 USD

16 data points across 13 retailers

5 retailers

A
Retailer 1
-
$209 USD
Price last confirmed 31 days ago
A
Retailer 2
-
$220 USD
View
Price last confirmed 31 days ago
B
Retailer 3
-
$645 USD
View
Price last confirmed 31 days ago
B
Retailer 4
-
$723 USD
£569 GBP
View
Most Expensive
B
Brilliant Earth
10571494A · Oct 3
$900 USD
View
Price last confirmed 25 days ago
4 more retailers have this diamond
Prices start from $723 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
$723 USD