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Cushion|Lab Grown|IGI

1.91ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818683328

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818683328

Diamond specifications and retailer prices

From £727 GBP
$974 USD
As of October 30, 2026
Save £3,885 GBP (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,612 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818683328 or 818683328. Listed at 12 retailers as of October 29, 2026, with prices from £727 to £4,612, a £3,885 spread on the same certified stone. Do Amore Diamonds lists it at £4,612. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818683328
Dimensions8.68 × 6.55 × 4.33 mm
L/W Ratio1.33
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
8.68 mm6.55 mm1.91 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818683328
Side View
Table 59.0%Crown 36.1°Girdle: MED-THKPavilion 34.1°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: £4,612 GBP|Low: £727 GBP|High: £6,404 GBP|Avg: £2,314 GBP|-28.0%
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
Retailer 13
Retailer 14
October 30, 2026
Retailer 10£727 GBP
Retailer 14£750 GBP
Retailer 9£978 GBP
Retailer 3£993 GBP
Retailer 7£1,124 GBP
Retailer 4£1,187 GBP
Retailer 12£1,771 GBP
Retailer 8£2,505 GBP
Retailer 5£2,726 GBP
Retailer 6£2,905 GBP
Retailer 11£2,930 GBP
Retailer 13£3,351 GBP
Retailer 2£3,388 GBP
Do Amore Diamonds£4,612 GBP

34 data points across 14 retailers

12 retailers£727 GBP to £4,612 GBP

A
Cheapest Retailer
-
£727 GBP
$974 USD
A
Retailer 2
-
£750 GBP
$1,005 USD
View
A
Retailer 3
-
£978 GBP
$1,311 USD
View
A
Retailer 4
-
£993 GBP
$1,331 USD
View
A
Retailer 5
-
£1,124 GBP
€1,434 EUR
View
Retailer 6
-
£1,187 GBP
$1,590 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,771 GBP
$2,373 USD
View
B+
Retailer 8
-
£2,505 GBP
View
B+
Retailer 9
-
£2,930 GBP
$3,926 USD
View
Retailer 10
-
£3,351 GBP
$4,490 USD
View
Price last confirmed 9 days ago
B
Retailer 11
-
£3,388 GBP
$4,540 USD
View
Most Expensive
B
Do Amore Diamonds
27-56F52F96D · Oct 29
£4,612 GBP
$6,180 USD
View
11 more retailers have this diamond
Prices start from £727 GBPSave up to £3,885 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
£727 GBP