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Cushion|Lab Grown|IGI

1.88ct D IF Cushion Lab Grown Diamond

D/IF • IGI LG768630864

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG768630864

Diamond specifications and retailer prices

From £385 GBP
$516 USD
As of October 30, 2026
Save £2,451 GBP (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,836 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 D colour (colourless) and IF clarity (flawless or internally-flawless) and certified by IGI LG768630864 or 768630864. Listed at 13 retailers as of October 30, 2026, with prices from £385 to £2,836, a £2,451 spread on the same certified stone. Brilliant Earth lists it at £2,836. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.88
Carat
D
Colour
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768630864
Dimensions8.21 × 6.58 × 4.43 mm
L/W Ratio1.25
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
8.21 mm6.58 mm1.88 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768630864
Side View
Table 56.0%Crown 36°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 67.3%

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 30
Current: £2,836 GBP|Low: £385 GBP|High: £4,179 GBP|Avg: £1,469 GBP|-32.1%
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
October 31, 2026
Retailer 5£385 GBP
Retailer 8£503 GBP
Retailer 13£545 GBP
Retailer 10£600 GBP
Retailer 2£651 GBP
Retailer 3£911 GBP
Retailer 6£975 GBP
Retailer 11£1,112 GBP
Retailer 7£1,545 GBP
Retailer 4£2,428 GBP
Retailer 12£2,444 GBP
Retailer 9£2,717 GBP
Brilliant Earth£2,836 GBP

30 data points across 13 retailers

13 retailers£385 GBP to £2,836 GBP

A
Cheapest Retailer
-
£385 GBP
$516 USD
Final sale: no returns
A
Retailer 2
-
£503 GBP
$674 USD
View
A
Retailer 3
-
£545 GBP
$730 USD
View
B+
Retailer 4
-
£600 GBP
$804 USD
View
A
Retailer 5
-
£651 GBP
€831 EUR
View
A
Retailer 6
-
£911 GBP
$1,221 USD
View
A
Retailer 7
-
£975 GBP
A$2,009 AUD
View
B+
Retailer 8
-
£1,112 GBP
$1,490 USD
View
B+
Retailer 9
-
£1,545 GBP
View
Retailer 10
-
£2,428 GBP
A$5,005 AUD
View
Price last confirmed 24 days ago
Retailer 11
-
£2,444 GBP
$3,275 USD
View
Price last confirmed 11 days ago
B
Retailer 12
-
£2,717 GBP
$3,640 USD
View
Most Expensive
B
Brilliant Earth
17840590Y · Oct 31
£2,836 GBP
$3,800 USD
View
12 more retailers have this diamond
Prices start from £385 GBPSave up to £2,451 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
£385 GBP