Cushion|Lab Grown|IGI

5.51ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG804659325

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804659325

Diamond specifications and retailer prices

From $7,986 USD
As of October 30, 2026
Save $23,470 USD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $31,456 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.51ct lab-grown cushion diamond

This 5.51ct 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 LG804659325 or 804659325. Listed at 12 retailers as of October 30, 2026, with prices from $7,986 to $31,456, a $23,470 spread on the same certified stone. Taylor and Hart lists it at $31,456. 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

5.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804659325
Dimensions11.71 × 9.68 × 6.22 mm
L/W Ratio1.21
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
11.71 mm9.68 mm5.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804659325
Side View
Table 61.0%Crown 37.8°Girdle: MED-STKPavilion 36.5°Culet: NoneDepth 64.3%

Caratlytics Score

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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 30
Current: $16,588 USD|Low: $7,986 USD|High: $33,336 USD|Avg: $18,726 USD|-16.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 31, 2026
Retailer 7$7,986 USD
Retailer 2$10,597 USD
Retailer 11$10,730 USD
Retailer 9$10,854 USD
Retailer 4$11,943 USD
Retailer 6$15,485 USD
Retailer 1$16,588 USD
Retailer 8$17,340 USD
Retailer 10$18,494 USD
Retailer 5$24,659 USD
Retailer 3$27,881 USD
Taylor and Hart$31,456 USD

39 data points across 12 retailers

12 retailers$7,986 USD to $31,456 USD

A
Cheapest Retailer
-
$7,986 USD
A
Retailer 2
-
$10,597 USD
View
Retailer 3
-
$10,730 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$10,854 USD
HK$84,800 HKD
View
A
Retailer 5
-
$11,943 USD
£9,404 GBP
View
A
Retailer 6
-
$15,485 USD
View
A
Retailer 7
-
$16,588 USD
€15,798 EUR
View
B+
Retailer 8
-
$17,340 USD
View
B+
Retailer 9
-
$18,494 USD
£14,562 GBP
View
B+
Retailer 10
-
$24,659 USD
View
B
Retailer 11
-
$27,881 USD
View
Most Expensive
B
Taylor and Hart
YXBMR75 · Oct 30
$31,456 USD
View
11 more retailers have this diamond
Prices start from $7,986 USDSave up to $23,470 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
5.51ct Cushion
$7,986 USD