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Cushion|Lab Grown|IGI

5.59ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG799630951

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG799630951

Diamond specifications and retailer prices

From £7,491 GBP
$10,037 USD
As of November 1, 2026
Save £19,142 GBP (72%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £26,633 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.59ct lab-grown cushion diamond

This 5.59ct 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 LG799630951 or 799630951. Listed at 13 retailers as of October 31, 2026, with prices from £7,491 to £26,633, a £19,142 spread on the same certified stone. Taylor and Hart lists it at £26,633. 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

5.59
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle28.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799630951
Dimensions11.86 × 9.11 × 6.00 mm
L/W Ratio1.30
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
11.86 mm9.11 mm5.59 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799630951
Side View
Table 59.0%Crown 35.2°Girdle: MED-THKPavilion 28.5°Culet: NoneDepth 65.9%

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: Nov 1
Current: £13,769 GBP|Low: £6,200 GBP|High: £26,633 GBP|Avg: £13,298 GBP|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
November 1, 2026
Retailer 5£6,200 GBP
Retailer 12£7,491 GBP
Retailer 13£8,275 GBP
Retailer 2£8,471 GBP
Retailer 8£8,572 GBP
Retailer 9£9,150 GBP
Retailer 6£10,192 GBP
Retailer 4£12,284 GBP
Retailer 1£13,769 GBP
Retailer 11£15,891 GBP
Retailer 7£17,415 GBP
Retailer 10£21,949 GBP
Retailer 3£23,879 GBP
Taylor and Hart£26,633 GBP

42 data points across 14 retailers

13 retailers£7,491 GBP to £26,633 GBP

A
Cheapest Retailer
-
£7,491 GBP
$10,037 USD
A
Retailer 2
-
£8,275 GBP
$11,088 USD
View
Final sale: no returns
A
Retailer 3
-
£8,471 GBP
$11,350 USD
View
Retailer 4
-
£8,572 GBP
$11,485 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
£9,150 GBP
$12,260 USD
View
A
Retailer 6
-
£10,192 GBP
View
A
Retailer 7
-
£12,284 GBP
View
B+
Retailer 8
-
£13,769 GBP
View
B+
Retailer 9
-
£15,891 GBP
$21,292 USD
View
B+
Retailer 10
-
£17,415 GBP
ZAR 376,968 ZAR
View
B
Retailer 11
-
£21,949 GBP
$29,409 USD
View
B
Retailer 12
-
£23,879 GBP
$31,996 USD
View
Most Expensive
B
Taylor and Hart
4F4A1BD · Oct 31
£26,633 GBP
$35,685 USD
View
12 more retailers have this diamond
Prices start from £7,491 GBPSave up to £19,142 GBP

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
5.59ct Cushion
£7,491 GBP