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Cushion|Lab Grown|IGI

5.26ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811634640

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG811634640

Diamond specifications and retailer prices

From £4,825 GBP
$6,465 USD
As of October 30, 2026
Save £26,909 GBP (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £31,734 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 5.26ct lab-grown cushion diamond

This 5.26ct 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 LG811634640 or 811634640. Listed at 10 retailers as of October 30, 2026, with prices from £4,825 to £31,734, a £26,909 spread on the same certified stone. Do Amore Diamonds lists it at £31,734. 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

5.26
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634640
Dimensions9.98 × 9.97 × 6.69 mm
L/W Ratio1.00
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
9.98 mm9.97 mm5.26 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634640
Side View
Table 58.0%Crown 34.4°Girdle: THK-VTKPavilion 38.5°Culet: NoneDepth 67.1%

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 30
Current: £31,734 GBP|Low: £4,825 GBP|High: £43,098 GBP|Avg: £16,222 GBP|-13.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2£4,825 GBP
Retailer 8£5,265 GBP
Retailer 6£6,027 GBP
Retailer 11£7,810 GBP
Retailer 10£8,310 GBP
Retailer 7£10,421 GBP
Retailer 9£11,872 GBP
Retailer 5£12,352 GBP
Retailer 4£16,653 GBP
Retailer 12£20,846 GBP
Do Amore Diamonds£31,734 GBP
Retailer 3£43,098 GBP

28 data points across 12 retailers

10 retailers£4,825 GBP to £31,734 GBP

A
Cheapest Retailer
-
£4,825 GBP
$6,465 USD
A
Retailer 2
-
£5,265 GBP
$7,055 USD
View
A
Retailer 3
-
£6,027 GBP
$8,075 USD
View
Retailer 4
-
£7,810 GBP
$10,465 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£8,310 GBP
$11,135 USD
View
A
Retailer 6
-
£10,421 GBP
€13,298 EUR
View
A
Retailer 7
-
£11,872 GBP
View
B+
Retailer 8
-
£12,352 GBP
$16,550 USD
View
B
Retailer 9
-
£20,846 GBP
$27,931 USD
View
Most Expensive
B
Do Amore Diamonds
27-E19D19297 · Oct 30
£31,734 GBP
$42,520 USD
View
9 more retailers have this diamond
Prices start from £4,825 GBPSave up to £26,909 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
5.26ct Cushion
£4,825 GBP