Cushion|Lab Grown|IGI

1.28ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG831687239

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831687239

Diamond specifications and retailer prices

From $239 USD
As of October 30, 2026
Save $1,549 USD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,788 USD at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

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 D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG831687239 or 831687239. Listed at 16 retailers as of October 30, 2026, with prices from $239 to $1,788, a $1,549 spread on the same certified stone. Helzberg Diamonds lists it at $1,788. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831687239
Dimensions7.72 × 5.53 × 3.71 mm
L/W Ratio1.40
Girdle conditionFaceted
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
7.72 mm5.53 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831687239
Side View
Table 60.0%Crown 34.8°Girdle: STK-THKPavilion 35.2°Culet: NoneDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,788 USD|Low: $228 USD|High: $1,788 USD|Avg: $752 USD
Helzberg Diamonds
Retailer 2
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Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
October 31, 2026
Retailer 15$239 USD
Retailer 11$303 USD
Retailer 2$449 USD
Retailer 3$455 USD
Retailer 16$455 USD
Retailer 9$490 USD
Retailer 13$510 USD
Retailer 4$643 USD
Retailer 5$647 USD
Retailer 10$687 USD
Retailer 6$867 USD
Retailer 8$904 USD
Retailer 14$1,005 USD
Retailer 12$1,067 USD
Retailer 7$1,310 USD
Helzberg Diamonds$1,788 USD

9 data points across 16 retailers

16 retailers$239 USD to $1,788 USD

A
Cheapest Retailer
-
$239 USD
Final sale: no returns
A
Retailer 2
-
$303 USD
£239 GBP
View
A
Retailer 3
-
$449 USD
€428 EUR
View
A
Retailer 4
-
$455 USD
ZAR 7,348 ZAR
View
A
Retailer 5
-
$455 USD
View
A
Retailer 6
-
$490 USD
£386 GBP
View
A
Retailer 7
-
$510 USD
View
A
Retailer 8
-
$643 USD
View
A
Retailer 9
-
$647 USD
A$996 AUD
View
B+
Retailer 10
-
$687 USD
View
B+
Retailer 11
-
$867 USD
SGD 1,171 SGD
View
B+
Retailer 12
-
$904 USD
View
B+
Retailer 13
-
$1,005 USD
View
B+
Retailer 14
-
$1,067 USD
£840 GBP
View
B
Retailer 15
-
$1,310 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJHMONIJP · Oct 30
$1,788 USD
View
15 more retailers have this diamond
Prices start from $239 USDSave up to $1,549 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
$239 USD