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Cushion|Lab Grown|IGI

4.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG768629789

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG768629789

Diamond specifications and retailer prices

From $4,234 USD
As of November 1, 2026
Save $14,773 USD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $19,007 USD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.1ct lab-grown cushion diamond

This 4.1ct 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 LG768629789 or 768629789. Listed at 14 retailers as of October 31, 2026, with prices from $4,234 to $19,007, a $14,773 spread on the same certified stone. Blue Nile lists it at $19,007. 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

4.10
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768629789
Dimensions10.51 × 8.75 × 5.76 mm
L/W Ratio1.20
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
10.51 mm8.75 mm4.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768629789
Side View
Table 60.0%Crown 35.8°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 1
Current: $19,007 USD|Low: $4,234 USD|High: $21,620 USD|Avg: $10,737 USD|+65.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 9$4,234 USD
Retailer 8$4,349 USD
Retailer 14$6,182 USD
Retailer 2$6,340 USD
Retailer 7$7,977 USD
Retailer 5$8,020 USD
Retailer 6$8,250 USD
Retailer 13$10,425 USD
Retailer 3$10,872 USD
Retailer 10$11,243 USD
Retailer 11$12,700 USD
Retailer 4$14,071 USD
Retailer 12$17,435 USD
Blue Nile$19,007 USD

35 data points across 14 retailers

14 retailers$4,234 USD to $19,007 USD

A+
Cheapest Retailer
-
$4,234 USD
A
Retailer 2
-
$4,349 USD
View
A
Retailer 3
-
$6,182 USD
HK$48,300 HKD
View
A
Retailer 4
-
$6,340 USD
£4,992 GBP
View
A
Retailer 5
-
$7,977 USD
€7,597 EUR
View
Retailer 6
-
$8,020 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$8,250 USD
View
B+
Retailer 8
-
$10,425 USD
ZAR 168,419 ZAR
View
B+
Retailer 9
-
$10,872 USD
£8,561 GBP
View
B+
Retailer 10
-
$11,243 USD
View
B+
Retailer 11
-
$12,700 USD
View
B+
Retailer 12
-
$14,071 USD
View
B+
Retailer 13
-
$17,435 USD
View
Most Expensive
B
Blue Nile
29977205 · Oct 31
$19,007 USD
View
13 more retailers have this diamond
Prices start from $4,234 USDSave up to $14,773 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+
4.10ct Cushion
$4,234 USD