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Cushion|Lab Grown|IGI

5.11ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG811634134

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811634134

Diamond specifications and retailer prices

From $9,843 USD
As of October 26, 2026
Save $27,512 USD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $37,355 USD at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.11ct lab-grown cushion diamond

This 5.11ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811634134 or 811634134. Listed at 10 retailers as of October 26, 2026, with prices from $9,843 to $37,355, a $27,512 spread on the same certified stone. With Clarity lists it at $37,355. 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

5.11
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634134
Dimensions11.21 × 9.36 × 6.14 mm
L/W Ratio1.20
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
11.21 mm9.36 mm5.11 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634134
Side View
Table 59.0%Crown 38.3°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 65.6%

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 26
Current: $11,344 USD|Low: $9,843 USD|High: $38,186 USD|Avg: $19,282 USD|-15.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 1, 2026
Retailer 9$9,843 USD
Retailer 6$10,022 USD
Retailer 3$10,469 USD
Retailer 1$11,344 USD
Retailer 2$15,384 USD
Retailer 4$16,080 USD
Retailer 7$17,521 USD
Retailer 8$25,857 USD
Retailer 5$30,000 USD
With Clarity$37,355 USD

39 data points across 10 retailers

10 retailers$9,843 USD to $37,355 USD

A
Cheapest Retailer
-
$9,843 USD
A
Retailer 2
-
$10,022 USD
HK$78,300 HKD
View
A
Retailer 3
-
$10,469 USD
View
A
Retailer 4
-
$11,344 USD
£8,932 GBP
View
A
Retailer 5
-
$15,384 USD
€14,651 EUR
View
B+
Retailer 6
-
$16,080 USD
View
B+
Retailer 7
-
$17,521 USD
£13,796 GBP
View
B
Retailer 8
-
$25,857 USD
View
B
Retailer 9
-
$30,000 USD
View
Most Expensive
B
With Clarity
811634134 · Oct 31
$37,355 USD
View
9 more retailers have this diamond
Prices start from $9,843 USDSave up to $27,512 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
5.11ct Cushion
$9,843 USD