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Cushion|Lab Grown|IGI

5.11ct F SI1 Cushion Lab Grown Diamond

GD • F/SI1 • IGI LG696511813

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG696511813

Diamond specifications and retailer prices

From £776 GBP
$1,042 USD
As of November 1, 2026
Save £2,197 GBP (74%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,973 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 5.11ct lab-grown cushion diamond

This 5.11ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG696511813 or 696511813. Listed at 9 retailers as of November 1, 2026, with prices from £776 to £2,973, a £2,197 spread on the same certified stone. Brilliant Earth lists it at £2,973. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

5.11
Carat
F
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG696511813
Dimensions11.96 × 9.19 × 6.01 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.96 mm9.19 mm5.11 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG696511813
Side View
Table 64.0%Crown 31.4°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,973 GBP|Low: £503 GBP|High: £5,604 GBP|Avg: £1,281 GBP|-46.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10£503 GBP
Retailer 7£529 GBP
Retailer 9£776 GBP
Retailer 5£779 GBP
Retailer 3£784 GBP
Retailer 2£814 GBP
Retailer 8£828 GBP
Retailer 6£987 GBP
Retailer 4£2,099 GBP
Brilliant Earth£2,973 GBP

35 data points across 10 retailers

9 retailers£776 GBP to £2,973 GBP

Retailer 1
-
£529 GBP
Price last confirmed 16 days ago
B
Retailer 2
-
£776 GBP
$1,042 USD
View
B+
Retailer 3
-
£779 GBP
$1,045 USD
View
B+
Retailer 4
-
£784 GBP
View
B+
Retailer 5
-
£814 GBP
€1,040 EUR
View
B+
Retailer 6
-
£828 GBP
$1,111 USD
View
B+
Retailer 7
-
£987 GBP
$1,324 USD
View
B
Retailer 8
-
£2,099 GBP
View
Most Expensive
B
Brilliant Earth
20358551A · Nov 2
£2,973 GBP
$3,990 USD
View
8 more retailers have this diamond
Prices start from £776 GBPSave up to £2,197 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.

B+
5.11ct Cushion
£776 GBP