Radiant|Lab Grown|IGI

1.28ct E VS1 Radiant Lab Grown Diamond

EX • E/VS1 • IGI LG836665002

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

Certificate IGI LG836665002

Diamond specifications and retailer prices

From $195 USD
As of October 27, 2026
Save $1,025 USD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,220 USD at Brilliant Earth · As of October 26, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG836665002 or 836665002. Listed at 19 retailers as of October 26, 2026, with prices from $195 to $1,220, a $1,025 spread on the same certified stone. Brilliant Earth lists it at $1,220. 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.1°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836665002
Dimensions7.81 × 5.26 × 3.62 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.81 mm5.26 mm1.28 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836665002
Side View
Table 65.0%Crown 45.1°Girdle: MediumPavilion 35.3°Culet: NoneDepth 68.8%

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: $1,220 USD|Low: $195 USD|High: $1,220 USD|Avg: $565 USD
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
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Retailer 19
October 29, 2026
Retailer 3$195 USD
Retailer 4$217 USD
Retailer 18$226 USD
Retailer 16$242 USD
Retailer 17$242 USD
Retailer 13$304 USD
Retailer 14$415 USD
Retailer 5$422 USD
Retailer 2$440 USD
Retailer 8$478 USD
Retailer 19$565 USD
Retailer 15$590 USD
Retailer 11$645 USD
Retailer 10$777 USD
Retailer 7$779 USD
Retailer 9$830 USD
Retailer 12$1,135 USD
Retailer 6$1,177 USD
Brilliant Earth$1,220 USD

9 data points across 19 retailers

19 retailers$195 USD to $1,220 USD

A
Cheapest Retailer
-
$195 USD
A
Retailer 2
-
$217 USD
View
Final sale: no returns
A
Retailer 3
-
$226 USD
View
A
Retailer 4
-
$242 USD
View
A
Retailer 5
-
$242 USD
View
A
Retailer 6
-
$304 USD
£240 GBP
View
A
Retailer 7
-
$415 USD
ZAR 6,703 ZAR
View
A
Retailer 8
-
$422 USD
View
A
Retailer 9
-
$440 USD
£346 GBP
View
A
Retailer 10
-
$478 USD
View
B+
Retailer 11
-
$565 USD
View
B+
Retailer 12
-
$590 USD
A$907 AUD
View
B+
Retailer 13
-
$645 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
$777 USD
View
B
Retailer 15
-
$779 USD
View
B
Retailer 16
-
$830 USD
View
B
Retailer 17
-
$1,135 USD
£894 GBP
View
B
Retailer 18
-
$1,177 USD
View
Most Expensive
B
Brilliant Earth
22221917A · Oct 26
$1,220 USD
View
18 more retailers have this diamond
Prices start from $195 USDSave up to $1,025 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
$195 USD