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Radiant|Lab Grown|IGI

1.87ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG825661174

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

Certificate IGI LG825661174

Diamond specifications and retailer prices

From £497 GBP
$666 USD
As of October 30, 2026
Save £2,570 GBP (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,388 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825661174 or 825661174. Listed at 20 retailers as of October 30, 2026, with a 517% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825661174
Dimensions8.33 × 6.33 × 4.21 mm
L/W Ratio1.32
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
8.33 mm6.33 mm1.87 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825661174
Side View
Table 63.0%Crown 41.5°Girdle: Slightly ThickPavilion 36.7°Culet: NoneDepth 66.5%

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: £3,388 GBP|Low: £497 GBP|High: £4,165 GBP|Avg: £1,620 GBP|-2.2%
Rare Carat
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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 5£497 GBP
Retailer 9£611 GBP
Retailer 15£634 GBP
Retailer 10£833 GBP
Retailer 4£844 GBP
Retailer 11£853 GBP
Retailer 14£945 GBP
Retailer 3£1,191 GBP
Retailer 17£1,239 GBP
Retailer 16£1,604 GBP
Retailer 2£1,663 GBP
Retailer 8£1,732 GBP
Retailer 6£1,780 GBP
Retailer 7£1,814 GBP
Retailer 13£2,401 GBP
Retailer 12£3,067 GBP
Rare Carat£3,388 GBP

34 data points across 17 retailers

20 retailers£497 GBP to £3,067 GBP

A
Cheapest Retailer
-
£497 GBP
$666 USD
Final sale: no returns
Retailer 2
-
£505 GBP
$677 USD
View
Price last confirmed 23 days ago
Retailer 3
-
£573 GBP
$768 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£587 GBP
$786 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
£634 GBP
$850 USD
View
A
Retailer 6
-
£833 GBP
€1,063 EUR
View
A
Retailer 7
-
£844 GBP
$1,131 USD
View
A
Retailer 8
-
£853 GBP
View
A
Retailer 9
-
£945 GBP
ZAR 20,462 ZAR
View
B+
Retailer 10
-
£1,191 GBP
$1,596 USD
View
B+
Retailer 11
-
£1,239 GBP
$1,660 USD
View
B+
Retailer 12
-
£1,604 GBP
View
Retailer 13
-
£1,649 GBP
$2,209 USD
View
Price last confirmed 24 days ago
B+
Retailer 14
-
£1,663 GBP
$2,228 USD
View
B+
Retailer 15
-
£1,732 GBP
SGD 3,136 SGD
View
B+
Retailer 16
-
£1,780 GBP
$2,384 USD
View
B
Retailer 17
-
£1,814 GBP
$2,430 USD
View
B
Retailer 18
-
£2,401 GBP
View
B
Retailer 19
-
£3,067 GBP
$4,110 USD
View
Most Expensive
Rare Carat
PD-244603 · Oct 21
£3,388 GBP
$4,540 USD
View
Price last confirmed 10 days ago
19 more retailers have this diamond
Prices start from £497 GBPSave up to £2,570 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
£497 GBP