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Cushion|Lab Grown|IGI

1.28ct E VVS1 Cushion Lab Grown Diamond

EX • E/VVS1 • IGI LG723540900

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG723540900

Diamond specifications and retailer prices

From $266 USD
As of October 28, 2026
Save $1,504 USD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,770 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion 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 LG723540900 or 723540900. Listed at 16 retailers as of October 28, 2026, with prices from $266 to $1,770, a $1,504 spread on the same certified stone. Brilliant Earth lists it at $1,770. 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 angle31.5°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG723540900
Dimensions5.80 × 5.80 × 3.99 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.80 mm5.80 mm1.28 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG723540900
Side View
Table 63.0%Crown 31.5°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 68.8%

Caratlytics Score

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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 28
Current: $1,770 USD|Low: $189 USD|High: $1,830 USD|Avg: $709 USD|-3.3%
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
Retailer 14
Retailer 15
October 29, 2026
Retailer 5$266 USD
Retailer 3$295 USD
Retailer 8$364 USD
Retailer 14$398 USD
Retailer 10$507 USD
Retailer 4$537 USD
Retailer 2$538 USD
Retailer 9$555 USD
Retailer 6$624 USD
Retailer 11$720 USD
Retailer 13$755 USD
Retailer 15$950 USD
Retailer 7$1,001 USD
Retailer 12$1,190 USD
Brilliant Earth$1,770 USD

41 data points across 15 retailers

16 retailers$266 USD to $1,770 USD

A
Cheapest Retailer
-
$266 USD
Final sale: no returns
A
Retailer 2
-
$295 USD
View
A
Retailer 3
-
$364 USD
£286 GBP
View
A
Retailer 4
-
$398 USD
View
A
Retailer 5
-
$507 USD
ZAR 8,197 ZAR
View
A
Retailer 6
-
$537 USD
View
A
Retailer 7
-
$538 USD
€512 EUR
View
A
Retailer 8
-
$555 USD
£437 GBP
View
A
Retailer 9
-
$624 USD
View
B+
Retailer 10
-
$720 USD
A$1,108 AUD
View
B+
Retailer 11
-
$755 USD
View
B+
Retailer 12
-
$950 USD
View
Price last confirmed 24 days ago
B+
Retailer 13
-
$1,001 USD
View
B
Retailer 14
-
$1,190 USD
£937 GBP
View
B
Retailer 15
-
$1,315 USD
View
Most Expensive
B
Brilliant Earth
21313249A · Oct 28
$1,770 USD
View
15 more retailers have this diamond
Prices start from $266 USDSave up to $1,504 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 Cushion
$266 USD