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Cushion|Lab Grown|IGI

1.80ct F IF Cushion Lab Grown Diamond

ID • F/IF • IGI LG816655806

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG816655806

Diamond specifications and retailer prices

From €547 EUR
$613 USD
As of November 1, 2026
Save €1,950 EUR (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €2,496 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.8ct lab-grown cushion diamond

This 1.8ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816655806 or 816655806. Listed at 7 retailers as of October 31, 2026, with prices from €547 to €2,496, a €1,950 spread on the same certified stone. Brilliant Earth lists it at €2,496. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816655806
Dimensions6.84 × 6.77 × 4.63 mm
L/W Ratio1.01
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
6.84 mm6.77 mm1.80 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816655806
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €2,496 EUR|Low: €547 EUR|High: €2,648 EUR|Avg: €1,189 EUR|-5.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4€547 EUR
Retailer 5€576 EUR
Retailer 6€647 EUR
Retailer 3€848 EUR
Retailer 2€1,341 EUR
Retailer 7€1,970 EUR
Brilliant Earth€2,496 EUR

27 data points across 7 retailers

7 retailers€547 EUR to €2,496 EUR

A+
Cheapest Retailer
-
€547 EUR
$613 USD
A
Retailer 2
-
€576 EUR
$646 USD
View
Retailer 3
-
€647 EUR
View
Price last confirmed 8 days ago
A
Retailer 4
-
€848 EUR
$951 USD
View
A
Retailer 5
-
€1,341 EUR
£1,184 GBP
View
B+
Retailer 6
-
€1,970 EUR
$2,210 USD
View
Most Expensive
B+
Brilliant Earth
20577045A · Oct 31
€2,496 EUR
$2,800 USD
View
6 more retailers have this diamond
Prices start from €547 EURSave up to €1,950 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.

A+
1.80ct Cushion
€547 EUR