Radiant|Lab Grown|IGI

1.28ct E VVS1 Radiant Lab Grown Diamond

ID • E/VVS1 • IGI LG831645783

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

Certificate IGI LG831645783

Diamond specifications and retailer prices

From $221 USD
As of October 27, 2026
Save $1,139 USD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,360 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 LG831645783 or 831645783. Listed at 20 retailers as of October 27, 2026, with prices from $221 to $1,360, a $1,139 spread on the same certified stone. Brilliant Earth lists it at $1,360. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831645783
Dimensions7.80 × 5.38 × 3.62 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.80 mm5.38 mm1.28 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831645783
Side View
Table 63.0%Crown 40.5°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.3%

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: Oct 27
Current: $1,360 USD|Low: $218 USD|High: $1,420 USD|Avg: $692 USD|-4.2%
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
Retailer 20
October 29, 2026
Retailer 7$221 USD
Retailer 11$248 USD
Retailer 16$257 USD
Retailer 4$274 USD
Retailer 6$274 USD
Retailer 3$370 USD
Retailer 14$471 USD
Retailer 19$476 USD
Retailer 13$507 USD
Retailer 20$619 USD
Retailer 15$671 USD
Retailer 9$882 USD
Retailer 17$885 USD
Retailer 18$900 USD
Retailer 12$908 USD
Retailer 10$935 USD
Retailer 8$945 USD
Retailer 2$1,105 USD
Retailer 5$1,261 USD
Brilliant Earth$1,360 USD

37 data points across 20 retailers

20 retailers$221 USD to $1,360 USD

A
Cheapest Retailer
-
$221 USD
A
Retailer 2
-
$248 USD
View
Final sale: no returns
A
Retailer 3
-
$257 USD
View
A
Retailer 4
-
$274 USD
View
A
Retailer 5
-
$274 USD
View
B+
Retailer 6
-
$370 USD
View
A
Retailer 7
-
$471 USD
ZAR 7,614 ZAR
View
A
Retailer 8
-
$476 USD
€453 EUR
View
A
Retailer 9
-
$507 USD
£400 GBP
View
B+
Retailer 10
-
$619 USD
View
B+
Retailer 11
-
$671 USD
A$1,032 AUD
View
B+
Retailer 12
-
$882 USD
View
B+
Retailer 13
-
$885 USD
View
B+
Retailer 14
-
$900 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$908 USD
A$1,397 AUD
View
Price last confirmed 24 days ago
B+
Retailer 16
-
$935 USD
View
B+
Retailer 17
-
$945 USD
View
B
Retailer 18
-
$1,105 USD
£870 GBP
View
B
Retailer 19
-
$1,261 USD
View
Most Expensive
B
Brilliant Earth
21123272A · Oct 28
$1,360 USD
View
19 more retailers have this diamond
Prices start from $221 USDSave up to $1,139 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
$221 USD