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Radiant|Lab Grown|IGI

1.88ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG846663228

Shape and cutting style on the report: Cut cornered square modified brilliant

Certificate IGI LG846663228

Diamond specifications and retailer prices

From £593 GBP
As of October 30, 2026
Save £2,549 GBP (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,142 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.88ct lab-grown radiant diamond

This 1.88ct lab-grown radiant 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 LG846663228 or 846663228. Listed at 7 retailers as of October 30, 2026, with prices from £593 to £3,142, a £2,549 spread on the same certified stone. Brilliant Earth lists it at £3,142. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663228
Dimensions7.31 × 6.63 × 4.59 mm
L/W Ratio1.10
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
7.31 mm6.63 mm1.88 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663228
Side View
Table 59.0%Crown 35°Girdle: ThickPavilion 35.6°Culet: NoneDepth 69.2%

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: £3,142 GBP|Low: £593 GBP|High: £3,142 GBP|Avg: £1,555 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4£593 GBP
Retailer 7£743 GBP
Retailer 5£857 GBP
Retailer 2£1,231 GBP
Retailer 3£1,906 GBP
Retailer 6£2,408 GBP
Brilliant Earth£3,142 GBP

7 data points across 7 retailers

7 retailers£593 GBP to £3,142 GBP

A
Cheapest Retailer
-
£593 GBP
A
Retailer 2
-
£743 GBP
$995 USD
View
A
Retailer 3
-
£857 GBP
$1,148 USD
View
B+
Retailer 4
-
£1,231 GBP
$1,649 USD
View
B+
Retailer 5
-
£1,906 GBP
$2,554 USD
View
B
Retailer 6
-
£2,408 GBP
View
Most Expensive
B
Brilliant Earth
22305457A · Oct 30
£3,142 GBP
$4,210 USD
View
6 more retailers have this diamond
Prices start from £593 GBPSave up to £2,549 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 Radiant
£593 GBP