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Cushion|Lab Grown|IGI

1.88ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG836612065

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836612065

Diamond specifications and retailer prices

From £549 GBP
$735 USD
As of October 30, 2026
Save £2,788 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,336 GBP at Brilliant Earth · As of October 30, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836612065 or 836612065. Listed at 17 retailers as of October 30, 2026, with prices from £549 to £3,336, a £2,788 spread on the same certified stone. Brilliant Earth lists it at £3,336. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836612065
Dimensions9.04 × 6.16 × 4.15 mm
L/W Ratio1.47
Girdle conditionFaceted
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
9.04 mm6.16 mm1.88 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836612065
Side View
Table 59.0%Crown 33.7°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 67.4%

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: Oct 30
Current: £3,336 GBP|Low: £549 GBP|High: £4,500 GBP|Avg: £1,651 GBP|-25.9%
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
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Retailer 16
Retailer 17
October 30, 2026
Retailer 4£549 GBP
Retailer 9£603 GBP
Retailer 2£636 GBP
Retailer 14£694 GBP
Retailer 10£897 GBP
Retailer 15£916 GBP
Retailer 11£962 GBP
Retailer 13£1,031 GBP
Retailer 16£1,208 GBP
Retailer 6£1,302 GBP
Retailer 3£1,740 GBP
Retailer 5£1,840 GBP
Retailer 17£1,936 GBP
Retailer 12£2,376 GBP
Retailer 8£2,691 GBP
Retailer 7£2,728 GBP
Brilliant Earth£3,336 GBP

27 data points across 17 retailers

17 retailers£549 GBP to £3,336 GBP

A
Cheapest Retailer
-
£549 GBP
$735 USD
Final sale: no returns
Retailer 2
-
£603 GBP
$808 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
£636 GBP
View
A
Retailer 4
-
£694 GBP
$930 USD
View
A
Retailer 5
-
£897 GBP
View
A
Retailer 6
-
£916 GBP
$1,228 USD
View
A
Retailer 7
-
£962 GBP
€1,228 EUR
View
A
Retailer 8
-
£1,031 GBP
ZAR 22,316 ZAR
View
A
Retailer 9
-
£1,208 GBP
$1,618 USD
View
A
Retailer 10
-
£1,302 GBP
$1,745 USD
View
B+
Retailer 11
-
£1,740 GBP
View
B+
Retailer 12
-
£1,840 GBP
$2,466 USD
View
B+
Retailer 13
-
£1,936 GBP
$2,594 USD
View
B+
Retailer 14
-
£2,376 GBP
View
B
Retailer 15
-
£2,691 GBP
$3,606 USD
View
Retailer 16
-
£2,728 GBP
$3,655 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21612320A · Oct 30
£3,336 GBP
$4,470 USD
View
16 more retailers have this diamond
Prices start from £549 GBPSave up to £2,788 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
£549 GBP