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Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG848625173

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG848625173

Diamond specifications and retailer prices

From £372 GBP
$498 USD
As of October 30, 2026
Save £1,311 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,683 GBP at Riddles Jewelry · As of October 31, 2026
View at Riddles Jewelry

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG848625173 or 848625173. Listed at 16 retailers as of October 30, 2026, with prices from £372 to £1,683, a £1,311 spread on the same certified stone. Riddles Jewelry lists it at £1,683. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle19.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848625173
Dimensions7.36 × 5.44 × 3.53 mm
L/W Ratio1.35
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
7.36 mm5.44 mm1.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848625173
Side View
Table 62.0%Crown 33°Girdle: MED-STKPavilion 19.9°Culet: NoneDepth 64.9%

Caratlytics Score

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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: £563 GBP|Low: £372 GBP|High: £1,683 GBP|Avg: £848 GBP
Retailer 1
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
Retailer 15
Riddles Jewelry
October 31, 2026
Retailer 4£372 GBP
Retailer 11£379 GBP
Retailer 9£437 GBP
Retailer 3£518 GBP
Retailer 1£563 GBP
Retailer 7£584 GBP
Retailer 8£602 GBP
Retailer 10£608 GBP
Retailer 15£631 GBP
Retailer 5£802 GBP
Retailer 12£1,213 GBP
Retailer 6£1,345 GBP
Retailer 2£1,359 GBP
Retailer 14£1,442 GBP
Retailer 13£1,575 GBP
Riddles Jewelry£1,683 GBP

6 data points across 16 retailers

16 retailers£372 GBP to £1,683 GBP

A
Cheapest Retailer
-
£372 GBP
$498 USD
Final sale: no returns
A
Retailer 2
-
£379 GBP
View
A
Retailer 3
-
£437 GBP
$585 USD
View
A
Retailer 4
-
£518 GBP
$694 USD
View
A
Retailer 5
-
£563 GBP
€718 EUR
View
A
Retailer 6
-
£584 GBP
$782 USD
View
A
Retailer 7
-
£602 GBP
View
A
Retailer 8
-
£608 GBP
$814 USD
View
A
Retailer 9
-
£631 GBP
ZAR 13,653 ZAR
View
B+
Retailer 10
-
£802 GBP
$1,074 USD
View
B
Retailer 11
-
£1,213 GBP
CA$2,258 CAD
View
B
Retailer 12
-
£1,345 GBP
$1,802 USD
View
B
Retailer 13
-
£1,359 GBP
$1,821 USD
View
B
Retailer 14
-
£1,442 GBP
View
B
Retailer 15
-
£1,575 GBP
$2,110 USD
View
Most Expensive
B
Riddles Jewelry
1996900373 · Oct 31
£1,683 GBP
$2,255 USD
View
15 more retailers have this diamond
Prices start from £372 GBPSave up to £1,311 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
1.09ct Cushion
£372 GBP