Cushion|Lab Grown|IGI

1.28ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG843667683

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG843667683

Diamond specifications and retailer prices

From $416 USD
£327 GBP
As of October 30, 2026
Save $2,194 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,610 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843667683 or 843667683. Listed at 10 retailers as of October 29, 2026, with prices from $416 to $2,610, a $2,194 spread on the same certified stone. Do Amore Diamonds lists it at $2,610. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle31.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843667683
Dimensions8.53 × 5.37 × 3.53 mm
L/W Ratio1.59
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
8.53 mm5.37 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843667683
Side View
Table 57.0%Crown 33.9°Girdle: MED-STKPavilion 31.6°Culet: NoneDepth 65.7%

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 30
Current: $2,610 USD|Low: $364 USD|High: $3,190 USD|Avg: $1,329 USD|-18.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 3$416 USD
Retailer 8$520 USD
Retailer 9$597 USD
Retailer 4$671 USD
Retailer 10$687 USD
Retailer 6$978 USD
Retailer 7$1,535 USD
Retailer 5$1,622 USD
Retailer 2$1,880 USD
Do Amore Diamonds$2,610 USD

16 data points across 10 retailers

10 retailers$416 USD to $2,610 USD

A
Cheapest Retailer
-
$416 USD
£327 GBP
A
Retailer 2
-
$520 USD
View
A
Retailer 3
-
$597 USD
View
A
Retailer 4
-
$671 USD
€639 EUR
View
A
Retailer 5
-
$687 USD
View
A
Retailer 6
-
$978 USD
A$1,504 AUD
View
B+
Retailer 7
-
$1,535 USD
View
B+
Retailer 8
-
$1,622 USD
£1,277 GBP
View
B+
Retailer 9
-
$1,880 USD
View
Most Expensive
B
Do Amore Diamonds
27-5C60E91B3 · Oct 29
$2,610 USD
View
9 more retailers have this diamond
Prices start from $416 USDSave up to $2,194 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
$416 USD