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Cushion|Lab Grown|IGI

5.55ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846663131

Shape and cutting style on the report: Round cornered rectangular mixed cut

Certificate IGI LG846663131

Diamond specifications and retailer prices

From £7,426 GBP
$9,950 USD
As of October 31, 2026
Save £22,827 GBP (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £30,253 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.55ct lab-grown cushion diamond

This 5.55ct 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 LG846663131 or 846663131. Listed at 9 retailers as of October 31, 2026, with prices from £7,426 to £30,253, a £22,827 spread on the same certified stone. With Clarity lists it at £30,253. 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

5.55
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663131
Dimensions11.61 × 8.13 × 5.36 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeLarge
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
11.61 mm8.13 mm5.55 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663131
Side View
Table 63.0%Crown 31.7°Girdle: STK-THKPavilion 40.1°Culet: LargeDepth 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: Oct 31
Current: £13,087 GBP|Low: £7,120 GBP|High: £44,142 GBP|Avg: £15,342 GBP|-5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
With Clarity
November 1, 2026
Retailer 5£7,426 GBP
Retailer 6£7,933 GBP
Retailer 2£8,160 GBP
Retailer 1£13,087 GBP
Retailer 4£13,356 GBP
Retailer 7£13,556 GBP
Retailer 8£13,994 GBP
Retailer 3£15,614 GBP
With Clarity£30,253 GBP

8 data points across 9 retailers

9 retailers£7,426 GBP to £30,253 GBP

A
Cheapest Retailer
-
£7,426 GBP
$9,950 USD
A
Retailer 2
-
£7,933 GBP
$10,629 USD
View
A
Retailer 3
-
£8,160 GBP
$10,933 USD
View
B+
Retailer 4
-
£13,087 GBP
View
B+
Retailer 5
-
£13,356 GBP
€17,044 EUR
View
B+
Retailer 6
-
£13,556 GBP
$18,164 USD
View
B+
Retailer 7
-
£13,994 GBP
$18,750 USD
View
B+
Retailer 8
-
£15,614 GBP
$20,921 USD
View
Most Expensive
B
With Clarity
846663131 · Oct 31
£30,253 GBP
$40,536 USD
View
8 more retailers have this diamond
Prices start from £7,426 GBPSave up to £22,827 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
5.55ct Cushion
£7,426 GBP