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Cushion|Lab Grown|IGI

1.91ct D IF Cushion Lab Grown Diamond

GD • D/IF • IGI LG836603142

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836603142

Diamond specifications and retailer prices

From £653 GBP
$875 USD
As of October 30, 2026
Save £2,228 GBP (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,881 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.91ct lab-grown cushion diamond

This 1.91ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG836603142 or 836603142. Listed at 10 retailers as of October 30, 2026, with prices from £653 to £2,881, a £2,228 spread on the same certified stone. Brilliant Earth lists it at £2,881. 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

1.91
Carat
D
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836603142
Dimensions9.59 × 6.20 × 4.10 mm
L/W Ratio1.55
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
9.59 mm6.20 mm1.91 ctD / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836603142
Side View
Table 61.0%Crown 31.3°Girdle: MED-THKPavilion 37.4°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
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: £2,881 GBP|Low: £633 GBP|High: £4,120 GBP|Avg: £1,859 GBP|-14.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 4£653 GBP
Retailer 7£720 GBP
Retailer 3£723 GBP
Retailer 8£946 GBP
Retailer 6£1,209 GBP
Retailer 5£1,923 GBP
Retailer 10£2,362 GBP
Retailer 2£2,513 GBP
Retailer 9£2,659 GBP
Brilliant Earth£2,881 GBP

27 data points across 10 retailers

10 retailers£653 GBP to £2,881 GBP

A
Cheapest Retailer
-
£653 GBP
$875 USD
Retailer 2
-
£720 GBP
$965 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£723 GBP
€922 EUR
View
A
Retailer 4
-
£946 GBP
$1,268 USD
View
B+
Retailer 5
-
£1,209 GBP
$1,621 USD
View
B+
Retailer 6
-
£1,923 GBP
View
Retailer 7
-
£2,362 GBP
$3,165 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
£2,513 GBP
A$5,181 AUD
View
B
Retailer 9
-
£2,659 GBP
$3,563 USD
View
Most Expensive
B
Brilliant Earth
21581130Y · Oct 30
£2,881 GBP
$3,860 USD
View
9 more retailers have this diamond
Prices start from £653 GBPSave up to £2,228 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
1.91ct Cushion
£653 GBP