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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG751506379

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG751506379

Diamond specifications and retailer prices

From £274 GBP
As of November 4, 2026
Save £1,904 GBP (87%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,178 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 top-tier cut grade and certified by IGI LG751506379 or 751506379. Listed at 20 retailers as of November 4, 2026, with prices from £274 to £2,178, a £1,904 spread on the same certified stone. Do Amore Diamonds lists it at £2,178. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG751506379
Dimensions6.85 × 6.69 × 4.34 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
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
6.85 mm6.69 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG751506379
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 39.7°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: Nov 4
Current: £2,178 GBP|Low: £274 GBP|High: £2,919 GBP|Avg: £1,172 GBP
Do Amore Diamonds
Retailer 2
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Retailer 18
November 5, 2026
Retailer 8£274 GBP
Retailer 12£419 GBP
Retailer 17£427 GBP
Retailer 15£437 GBP
Retailer 4£494 GBP
Retailer 13£579 GBP
Retailer 3£590 GBP
Retailer 2£600 GBP
Retailer 11£782 GBP
Retailer 6£1,148 GBP
Retailer 5£1,190 GBP
Retailer 10£1,195 GBP
Retailer 9£1,223 GBP
Retailer 7£1,309 GBP
Retailer 14£1,311 GBP
Retailer 18£1,852 GBP
Retailer 16£2,096 GBP
Do Amore Diamonds£2,178 GBP

43 data points across 18 retailers

20 retailers£274 GBP to £2,178 GBP

A
Cheapest Retailer
-
£274 GBP
Final sale: no returns
A
Retailer 2
-
£419 GBP
View
A
Retailer 3
-
£427 GBP
View
A
Retailer 4
-
£437 GBP
View
A
Retailer 5
-
£494 GBP
View
A
Retailer 6
-
£579 GBP
View
A
Retailer 7
-
£590 GBP
View
A
Retailer 8
-
£600 GBP
View
A
Retailer 9
-
£782 GBP
View
B+
Retailer 10
-
£1,138 GBP
View
Retailer 11
-
£1,148 GBP
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£1,190 GBP
View
B+
Retailer 13
-
£1,195 GBP
View
B+
Retailer 14
-
£1,223 GBP
View
B+
Retailer 15
-
£1,309 GBP
View
B+
Retailer 16
-
£1,311 GBP
View
Retailer 17
-
£1,852 GBP
View
Price last confirmed 17 days ago
B
Retailer 18
-
£2,096 GBP
View
Retailer 19
-
£2,107 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Do Amore Diamonds
27-3ED74AAD0 · Nov 4
£2,178 GBP
$2,940 USD
View
19 more retailers have this diamond
Prices start from £274 GBPSave up to £1,904 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
1.51ct Cushion
£274 GBP