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Cushion|Lab Grown|IGI

5.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811634412

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811634412

Diamond specifications and retailer prices

From $9,807 USD
As of October 26, 2026
Save $28,229 USD (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $38,036 USD at With Clarity · As of October 28, 2026
View at With Clarity

About this 5.09ct lab-grown cushion diamond

This 5.09ct 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 LG811634412 or 811634412. Listed at 12 retailers as of October 26, 2026, with prices from $9,807 to $38,036, a $28,229 spread on the same certified stone. With Clarity lists it at $38,036. 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

5.09
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634412
Dimensions11.06 × 9.35 × 6.18 mm
L/W Ratio1.18
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
11.06 mm9.35 mm5.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634412
Side View
Table 59.0%Crown 37.8°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 66.1%

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: $18,612 USD|Low: $7,627 USD|High: $38,036 USD|Avg: $18,699 USD|-16.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
October 29, 2026
Retailer 4$7,627 USD
Retailer 12$9,807 USD
Retailer 5$9,971 USD
Retailer 11$10,456 USD
Retailer 6$11,506 USD
Retailer 7$15,433 USD
Retailer 2$17,108 USD
Retailer 8$17,455 USD
Retailer 1$18,612 USD
Retailer 9$22,760 USD
Retailer 10$25,755 USD
Retailer 3$30,320 USD
With Clarity$38,036 USD

38 data points across 13 retailers

12 retailers$9,807 USD to $38,036 USD

A
Cheapest Retailer
-
$9,807 USD
A
Retailer 2
-
$9,971 USD
HK$77,900 HKD
View
A
Retailer 3
-
$10,456 USD
View
A
Retailer 4
-
$11,506 USD
£9,060 GBP
View
A
Retailer 5
-
$15,433 USD
€14,698 EUR
View
B+
Retailer 6
-
$17,108 USD
View
B+
Retailer 7
-
$17,455 USD
£13,744 GBP
View
B+
Retailer 8
-
$18,612 USD
ZAR 300,677 ZAR
View
B+
Retailer 9
-
$22,760 USD
View
B+
Retailer 10
-
$25,755 USD
View
B
Retailer 11
-
$30,320 USD
View
Most Expensive
B
With Clarity
811634412 · Oct 28
$38,036 USD
View
11 more retailers have this diamond
Prices start from $9,807 USDSave up to $28,229 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
5.09ct Cushion
$9,807 USD