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Cushion|Lab Grown|IGI

5.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662161

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662161

Diamond specifications and retailer prices

From $7,803 USD
As of October 29, 2026
Save $9,768 USD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $17,571 USD at Brilliance · As of October 27, 2026
View at Brilliance

About this 5.18ct lab-grown cushion diamond

This 5.18ct 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 LG846662161 or 846662161. Listed at 10 retailers as of October 27, 2026, with prices from $7,803 to $17,571, a $9,768 spread on the same certified stone. Brilliance lists it at $17,571. 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

5.18
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662161
Dimensions12.69 × 8.97 × 5.95 mm
L/W Ratio1.41
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
12.69 mm8.97 mm5.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662161
Side View
Table 63.0%Crown 34.1°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
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: Oct 29
Current: $17,571 USD|Low: $7,177 USD|High: $52,958 USD|Avg: $17,423 USD|+1.3%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$7,803 USD
Retailer 3$8,102 USD
Retailer 5$8,810 USD
Retailer 10$9,417 USD
Retailer 9$11,054 USD
Retailer 6$16,556 USD
Retailer 4$17,057 USD
Retailer 2$17,500 USD
Brilliance$17,571 USD
Retailer 8$52,285 USD

9 data points across 10 retailers

10 retailers$7,803 USD to $17,571 USD

A
Cheapest Retailer
-
$7,803 USD
A
Retailer 2
-
$8,102 USD
£6,380 GBP
View
A
Retailer 3
-
$8,810 USD
View
A
Retailer 4
-
$9,417 USD
View
A
Retailer 5
-
$11,054 USD
View
B+
Retailer 6
-
$16,556 USD
£13,036 GBP
View
B+
Retailer 7
-
$17,057 USD
€16,245 EUR
View
B
Retailer 8
-
$17,500 USD
View
Most Expensive
B+
Brilliance
D46297998 · Oct 27
$17,571 USD
View
8 more retailers have this diamond
Prices start from $7,803 USDSave up to $9,768 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
5.18ct Cushion
$7,803 USD