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Cushion|Lab Grown|IGI

1.27ct F IF Cushion Lab Grown Diamond

ID • F/IF • IGI LG840634831

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840634831

Diamond specifications and retailer prices

From £200 GBP
As of November 6, 2026
Save £1,215 GBP (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,415 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.27ct lab-grown cushion diamond

This 1.27ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634831 or 840634831. Listed at 16 retailers as of November 6, 2026, with prices from £200 to £1,415, a £1,215 spread on the same certified stone. Helzberg Diamonds lists it at £1,415. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634831
Dimensions7.85 × 5.39 × 3.69 mm
L/W Ratio1.46
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
7.85 mm5.39 mm1.27 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634831
Side View
Table 64.0%Crown 36.7°Girdle: STK-THKPavilion 35.3°Culet: NoneDepth 68.5%

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: Nov 6
Current: £1,415 GBP|Low: £200 GBP|High: £1,415 GBP|Avg: £612 GBP
Helzberg 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
Retailer 15
Retailer 16
November 6, 2026
Retailer 10£200 GBP
Retailer 5£222 GBP
Retailer 11£233 GBP
Retailer 8£375 GBP
Retailer 2£376 GBP
Retailer 9£387 GBP
Retailer 12£415 GBP
Retailer 15£543 GBP
Retailer 16£560 GBP
Retailer 6£655 GBP
Retailer 7£752 GBP
Retailer 13£760 GBP
Retailer 14£886 GBP
Retailer 4£990 GBP
Retailer 3£1,233 GBP
Helzberg Diamonds£1,415 GBP

21 data points across 16 retailers

16 retailers£200 GBP to £1,415 GBP

A
Cheapest Retailer
-
£200 GBP
Final sale: no returns
Retailer 2
-
£222 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£233 GBP
View
A
Retailer 4
-
£375 GBP
View
A
Retailer 5
-
£376 GBP
View
A
Retailer 6
-
£387 GBP
View
A
Retailer 7
-
£415 GBP
View
A
Retailer 8
-
£543 GBP
View
A
Retailer 9
-
£560 GBP
View
A
Retailer 10
-
£655 GBP
View
A
Retailer 11
-
£752 GBP
View
A
Retailer 12
-
£760 GBP
View
B+
Retailer 13
-
£886 GBP
View
B+
Retailer 14
-
£990 GBP
View
B+
Retailer 15
-
£1,233 GBP
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJKOJH · Nov 6
£1,415 GBP
$1,894 USD
View
15 more retailers have this diamond
Prices start from £200 GBPSave up to £1,215 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
1.27ct Cushion
£200 GBP