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Cushion|Lab Grown|IGI

1.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG783648800

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG783648800

Diamond specifications and retailer prices

From €998 EUR
$1,115 USD
As of October 31, 2026
Save €1,123 EUR (53%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €2,121 EUR at Brilliant Earth · As of October 30, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG783648800 or 783648800. Listed at 4 retailers as of October 30, 2026, with prices from €998 to €2,121, a €1,123 spread on the same certified stone. Brilliant Earth lists it at €2,121. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783648800
Dimensions8.12 × 5.54 × 3.47 mm
L/W Ratio1.47
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
8.12 mm5.54 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783648800
Side View
Table 60.0%Crown 36.3°Girdle: THN-STKPavilion 33.7°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €2,121 EUR|Low: €640 EUR|High: €3,043 EUR|Avg: €1,651 EUR|-30.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 5€640 EUR
Retailer 2€998 EUR
Retailer 8€1,034 EUR
Retailer 11€1,284 EUR
Retailer 4€1,290 EUR
Retailer 10€1,333 EUR
Retailer 9€1,341 EUR
Retailer 12€1,524 EUR
Retailer 6€1,744 EUR
Brilliant Earth€2,121 EUR
Retailer 7€2,864 EUR
Retailer 3€2,876 EUR

16 data points across 12 retailers

4 retailers€998 EUR to €2,121 EUR

Retailer 1
-
€640 EUR
$715 USD
Price last confirmed 20 days ago
B+
Retailer 2
-
€998 EUR
$1,115 USD
View
Retailer 3
-
€1,744 EUR
£1,534 GBP
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21401971Y · Oct 30
€2,121 EUR
$2,370 USD
View
3 more retailers have this diamond
Prices start from €998 EURSave up to €1,123 EUR

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.

B+
1.28ct Cushion
€998 EUR