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Radiant|Lab Grown|IGI

1.88ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG731591058

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

Certificate IGI LG731591058

Diamond specifications and retailer prices

From £2,944 GBP
$3,920 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: £2,944 GBP at Brilliant Earth
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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731591058 or 731591058. Listed at 2 retailers as of October 29, 2026. 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 angle41.6°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731591058
Dimensions8.97 × 6.14 × 4.04 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.97 mm6.14 mm1.88 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731591058
Side View
Table 65.0%Crown 41.6°Girdle: MediumPavilion 34.2°Culet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £2,944 GBP|Low: £306 GBP|High: £3,616 GBP|Avg: £1,387 GBP|-3.7%
Brilliant Earth
Retailer 2
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August 22, 2026
Retailer 14£306 GBP
Retailer 10£571 GBP
Retailer 11£673 GBP
Retailer 9£718 GBP
Retailer 2£758 GBP
Retailer 7£831 GBP
Retailer 5£861 GBP
Retailer 15£1,097 GBP
Retailer 16£1,188 GBP
Retailer 12£1,293 GBP
Retailer 13£1,549 GBP
Retailer 3£1,642 GBP
Retailer 8£1,836 GBP
Retailer 4£1,931 GBP
Retailer 6£2,213 GBP
Brilliant Earth£2,944 GBP

62 data points across 16 retailers

2 retailers

Retailer 1
-
£1,836 GBP
A$3,762 AUD
Price last confirmed 118 days ago
Most Expensive
B
Brilliant Earth
15773941A · Oct 29
£2,944 GBP
$3,920 USD
View
1 more retailer has this diamond

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.

B
1.88ct Radiant
£2,944 GBP