Cushion|Lab Grown|IGI

4.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811635657

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

Certificate IGI LG811635657

Diamond specifications and retailer prices

From $4,073 USD
As of October 29, 2026
Save $21,177 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $25,250 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.18ct lab-grown cushion diamond

This 4.18ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811635657 or 811635657. Listed at 10 retailers as of October 29, 2026, with prices from $4,073 to $25,250, a $21,177 spread on the same certified stone. Do Amore Diamonds lists it at $25,250. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.18
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811635657
Dimensions9.22 × 9.20 × 6.22 mm
L/W Ratio1.00
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
9.22 mm9.20 mm4.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811635657
Side View
Table 58.0%Crown 37.3°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 67.6%

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: Oct 29
Current: $25,250 USD|Low: $4,073 USD|High: $33,610 USD|Avg: $14,172 USD|-21.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$4,073 USD
Retailer 7$4,410 USD
Retailer 5$4,588 USD
Retailer 9$6,644 USD
Retailer 6$8,110 USD
Retailer 11$8,165 USD
Retailer 8$10,121 USD
Retailer 2$12,950 USD
Retailer 4$13,504 USD
Retailer 12$19,881 USD
Do Amore Diamonds$25,250 USD
Retailer 3$33,610 USD

27 data points across 12 retailers

10 retailers$4,073 USD to $25,250 USD

A+
Cheapest Retailer
-
$4,073 USD
A
Retailer 2
-
$4,410 USD
View
A
Retailer 3
-
$4,588 USD
View
A
Retailer 4
-
$6,644 USD
View
A
Retailer 5
-
$8,110 USD
€7,724 EUR
View
Retailer 6
-
$8,165 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$10,121 USD
£7,969 GBP
View
B+
Retailer 8
-
$12,950 USD
View
B
Retailer 9
-
$19,881 USD
View
Most Expensive
B
Do Amore Diamonds
27-C916D5FE2 · Oct 30
$25,250 USD
View
9 more retailers have this diamond
Prices start from $4,073 USDSave up to $21,177 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+
4.18ct Cushion
$4,073 USD