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Cushion|Lab Grown|IGI

1.86ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG840633271

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

Certificate IGI LG840633271

Diamond specifications and retailer prices

From €665 EUR
$743 USD
As of October 30, 2026
Save €3,067 EUR (82%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €3,733 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.86ct lab-grown cushion diamond

This 1.86ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840633271 or 840633271. Listed at 20 retailers as of October 30, 2026, with prices from €665 to €3,733, a €3,067 spread on the same certified stone. Brilliant Earth lists it at €3,733. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633271
Dimensions7.16 × 6.99 × 4.77 mm
L/W Ratio1.02
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
7.16 mm6.99 mm1.86 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633271
Side View
Table 56.0%Crown 35°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 68.2%

Caratlytics Score

How it works →
A
Excellent
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: Oct 30
Current: €3,733 EUR|Low: €491 EUR|High: €5,335 EUR|Avg: €1,937 EUR|-30.0%
Brilliant Earth
Retailer 2
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Retailer 20
November 1, 2026
Retailer 5€665 EUR
Retailer 12€668 EUR
Retailer 2€716 EUR
Retailer 18€783 EUR
Retailer 8€876 EUR
Retailer 19€1,037 EUR
Retailer 13€1,051 EUR
Retailer 14€1,158 EUR
Retailer 17€1,163 EUR
Retailer 3€1,411 EUR
Retailer 15€1,465 EUR
Retailer 7€1,964 EUR
Retailer 4€2,188 EUR
Retailer 16€2,311 EUR
Retailer 9€2,405 EUR
Retailer 20€2,943 EUR
Retailer 11€3,200 EUR
Retailer 10€3,231 EUR
Retailer 6€3,390 EUR
Brilliant Earth€3,733 EUR

25 data points across 20 retailers

20 retailers€665 EUR to €3,733 EUR

A
Cheapest Retailer
-
€665 EUR
$743 USD
Final sale: no returns
Retailer 2
-
€668 EUR
$746 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
€716 EUR
£630 GBP
View
A
Retailer 4
-
€783 EUR
$875 USD
View
A
Retailer 5
-
€876 EUR
$979 USD
View
A
Retailer 6
-
€1,037 EUR
$1,159 USD
View
A
Retailer 7
-
€1,051 EUR
£925 GBP
View
A
Retailer 8
-
€1,158 EUR
View
A
Retailer 9
-
€1,163 EUR
ZAR 20,998 ZAR
View
A
Retailer 10
-
€1,411 EUR
$1,576 USD
View
A
Retailer 11
-
€1,465 EUR
$1,637 USD
View
B+
Retailer 12
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€1,964 EUR
£1,728 GBP
View
B+
Retailer 13
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€2,188 EUR
$2,445 USD
View
B+
Retailer 14
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€2,311 EUR
$2,582 USD
View
B+
Retailer 15
-
€2,405 EUR
SGD 3,631 SGD
View
B+
Retailer 16
-
€2,943 EUR
£2,589 GBP
View
B
Retailer 17
-
€3,200 EUR
$3,575 USD
View
Retailer 18
-
€3,231 EUR
$3,610 USD
View
Price last confirmed 11 days ago
B
Retailer 19
-
€3,390 EUR
$3,787 USD
View
Most Expensive
B
Brilliant Earth
21729253A · Oct 31
€3,733 EUR
$4,170 USD
View
19 more retailers have this diamond
Prices start from €665 EURSave up to €3,067 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
1.86ct Cushion
€665 EUR