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Cushion|Lab Grown|IGI

1.88ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG668428911

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG668428911

Diamond specifications and retailer prices

From £479 GBP
$638 USD
As of October 28, 2026
Save £3,328 GBP (87%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,807 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.88ct lab-grown cushion diamond

This 1.88ct 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 LG668428911 or 668428911. Listed at 10 retailers as of October 28, 2026, with prices from £479 to £3,807, a £3,328 spread on the same certified stone. Do Amore Diamonds lists it at £3,807. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668428911
Dimensions7.19 × 7.18 × 4.86 mm
L/W Ratio1.00
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
7.19 mm7.18 mm1.88 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668428911
Side View
Table 60.0%Crown 35.8°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £3,604 GBP|Low: £479 GBP|High: £3,604 GBP|Avg: £1,469 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 8£479 GBP
Retailer 7£703 GBP
Retailer 6£817 GBP
Retailer 4£819 GBP
Retailer 9£982 GBP
Retailer 5£1,364 GBP
Retailer 3£2,088 GBP
Retailer 2£2,322 GBP
Do Amore Diamonds£3,604 GBP

17 data points across 9 retailers

10 retailers£479 GBP to £3,807 GBP

A
Cheapest Retailer
-
£479 GBP
$638 USD
Final sale: no returns
A
Retailer 2
-
£703 GBP
$936 USD
View
A
Retailer 3
-
£817 GBP
$1,088 USD
View
A
Retailer 4
-
£819 GBP
$1,090 USD
View
A
Retailer 5
-
£982 GBP
$1,308 USD
View
Retailer 6
-
£1,364 GBP
A$2,795 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,088 GBP
$2,780 USD
View
B+
Retailer 8
-
£2,322 GBP
View
B
Retailer 9
-
£3,604 GBP
$4,800 USD
View
Most Expensive
B
Do Amore Diamonds
27-903074808 · Oct 29
£3,807 GBP
$5,070 USD
View
9 more retailers have this diamond
Prices start from £479 GBPSave up to £3,328 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
1.88ct Cushion
£479 GBP