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Cushion|Lab Grown|IGI

1.03ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG825656388

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825656388

Diamond specifications and retailer prices

From £213 GBP
$286 USD
As of October 25, 2026
Save £839 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,052 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.03ct lab-grown cushion diamond

This 1.03ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825656388 or 825656388. Listed at 14 retailers as of October 25, 2026, with prices from £213 to £1,052, a £839 spread on the same certified stone. Brilliant Earth lists it at £1,052. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825656388
Dimensions7.54 × 5.17 × 3.45 mm
L/W Ratio1.46
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
7.54 mm5.17 mm1.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825656388
Side View
Table 58.0%Crown 32.8°Girdle: MED-THKPavilion 35.4°Culet: NoneDepth 66.7%

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 25
Current: £1,052 GBP|Low: £213 GBP|High: £1,530 GBP|Avg: £585 GBP|-31.2%
Brilliant Earth
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 31, 2026
Retailer 6£213 GBP
Retailer 7£220 GBP
Retailer 8£353 GBP
Retailer 3£361 GBP
Retailer 9£366 GBP
Retailer 2£402 GBP
Retailer 4£431 GBP
Retailer 10£520 GBP
Retailer 13£558 GBP
Retailer 14£687 GBP
Retailer 5£725 GBP
Retailer 11£856 GBP
Retailer 12£1,022 GBP
Brilliant Earth£1,052 GBP

35 data points across 14 retailers

14 retailers£213 GBP to £1,052 GBP

A
Cheapest Retailer
-
£213 GBP
$286 USD
A
Retailer 2
-
£220 GBP
View
A
Retailer 3
-
£353 GBP
€450 EUR
View
A
Retailer 4
-
£361 GBP
$484 USD
View
A
Retailer 5
-
£366 GBP
ZAR 7,932 ZAR
View
A
Retailer 6
-
£402 GBP
View
A
Retailer 7
-
£431 GBP
$578 USD
View
A
Retailer 8
-
£520 GBP
A$1,072 AUD
View
A
Retailer 9
-
£558 GBP
$748 USD
View
B+
Retailer 10
-
£687 GBP
SGD 1,244 SGD
View
B+
Retailer 11
-
£725 GBP
$971 USD
View
B+
Retailer 12
-
£856 GBP
View
Retailer 13
-
£1,022 GBP
$1,370 USD
View
Price last confirmed 12 days ago
Most Expensive
B+
Brilliant Earth
21589669A · Oct 30
£1,052 GBP
$1,410 USD
View
13 more retailers have this diamond
Prices start from £213 GBPSave up to £839 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
1.03ct Cushion
£213 GBP