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Cushion|Lab Grown|IGI

1.70ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG750524534

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG750524534

Diamond specifications and retailer prices

From £350 GBP
$466 USD
As of October 28, 2026
Save £2,977 GBP (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,327 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG750524534 or 750524534. Listed at 10 retailers as of October 28, 2026, with prices from £350 to £3,327, a £2,977 spread on the same certified stone. Brilliant Earth lists it at £3,327. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750524534
Dimensions8.67 × 5.81 × 3.97 mm
L/W Ratio1.49
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
8.67 mm5.81 mm1.70 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750524534
Side View
Table 57.0%Crown 34.5°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 68.3%

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 28
Current: £3,327 GBP|Low: £250 GBP|High: £3,432 GBP|Avg: £1,319 GBP|-3.1%
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
Retailer 15
October 29, 2026
Retailer 15£350 GBP
Retailer 13£523 GBP
Retailer 12£525 GBP
Retailer 9£526 GBP
Retailer 2£837 GBP
Retailer 4£852 GBP
Retailer 11£864 GBP
Retailer 10£987 GBP
Retailer 7£1,262 GBP
Retailer 8£1,416 GBP
Retailer 5£1,545 GBP
Retailer 3£1,582 GBP
Retailer 6£1,813 GBP
Retailer 14£2,343 GBP
Brilliant Earth£3,327 GBP

22 data points across 15 retailers

10 retailers£350 GBP to £3,327 GBP

A
Cheapest Retailer
-
£350 GBP
$466 USD
Final sale: no returns
A
Retailer 2
-
£523 GBP
$697 USD
View
A
Retailer 3
-
£525 GBP
$699 USD
View
A
Retailer 4
-
£526 GBP
$700 USD
View
A
Retailer 5
-
£837 GBP
A$1,715 AUD
View
A
Retailer 6
-
£864 GBP
$1,151 USD
View
A
Retailer 7
-
£987 GBP
$1,315 USD
View
B+
Retailer 8
-
£1,416 GBP
View
B
Retailer 9
-
£2,343 GBP
$3,120 USD
View
Most Expensive
B
Brilliant Earth
21406205Y · Oct 29
£3,327 GBP
$4,430 USD
View
9 more retailers have this diamond
Prices start from £350 GBPSave up to £2,977 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
1.70ct Cushion
£350 GBP