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Radiant|Lab Grown|IGI

1.87ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG830620119

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

Certificate IGI LG830620119

Diamond specifications and retailer prices

From £562 GBP
$753 USD
As of October 29, 2026
Save £2,826 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,388 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.87ct lab-grown radiant diamond

This 1.87ct 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 LG830620119 or 830620119. Listed at 12 retailers as of October 29, 2026, with prices from £562 to £3,388, a £2,826 spread on the same certified stone. Brilliant Earth lists it at £3,388. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620119
Dimensions8.40 × 6.21 × 4.23 mm
L/W Ratio1.35
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
8.40 mm6.21 mm1.87 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620119
Side View
Table 67.0%Crown 40.7°Girdle: ThickPavilion 37.5°Culet: NoneDepth 68.1%

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 29
Current: £3,388 GBP|Low: £562 GBP|High: £3,388 GBP|Avg: £1,303 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10£562 GBP
Retailer 12£565 GBP
Retailer 2£637 GBP
Retailer 11£694 GBP
Retailer 6£898 GBP
Retailer 5£916 GBP
Retailer 8£1,197 GBP
Retailer 4£1,848 GBP
Retailer 9£1,939 GBP
Retailer 3£2,040 GBP
Retailer 7£2,158 GBP
Brilliant Earth£3,388 GBP

2 data points across 12 retailers

12 retailers£562 GBP to £3,388 GBP

A
Cheapest Retailer
-
£562 GBP
$753 USD
A
Retailer 2
-
£565 GBP
$757 USD
View
Final sale: no returns
A
Retailer 3
-
£637 GBP
View
A
Retailer 4
-
£694 GBP
$930 USD
View
A
Retailer 5
-
£898 GBP
View
A
Retailer 6
-
£916 GBP
$1,228 USD
View
B+
Retailer 7
-
£1,197 GBP
$1,604 USD
View
B
Retailer 8
-
£1,848 GBP
$2,476 USD
View
B
Retailer 9
-
£1,939 GBP
$2,597 USD
View
B
Retailer 10
-
£2,040 GBP
SGD 3,694 SGD
View
B
Retailer 11
-
£2,158 GBP
$2,892 USD
View
Most Expensive
B
Brilliant Earth
22348624A · Oct 30
£3,388 GBP
$4,540 USD
View
11 more retailers have this diamond
Prices start from £562 GBPSave up to £2,826 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
1.87ct Radiant
£562 GBP