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Radiant|Lab Grown|IGI

1.86ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG799647057

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

Certificate IGI LG799647057

Diamond specifications and retailer prices

From £494 GBP
$662 USD
As of October 30, 2026
Save £2,029 GBP (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,142 GBP at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.86ct lab-grown radiant diamond

This 1.86ct 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 LG799647057 or 799647057. Listed at 23 retailers as of October 30, 2026, with a 411% 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

1.86
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799647057
Dimensions8.42 × 6.06 × 4.24 mm
L/W Ratio1.39
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
8.42 mm6.06 mm1.86 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799647057
Side View
Table 59.0%Crown 46.3°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 70.0%

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 30
Current: £2,523 GBP|Low: £494 GBP|High: £4,015 GBP|Avg: £1,599 GBP|-37.2%
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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 7£494 GBP
Retailer 12£631 GBP
Retailer 4£715 GBP
Retailer 13£828 GBP
Retailer 5£840 GBP
Retailer 2£849 GBP
Retailer 11£940 GBP
Retailer 3£1,179 GBP
Retailer 17£1,232 GBP
Retailer 16£1,592 GBP
Retailer 14£1,654 GBP
Retailer 9£1,723 GBP
Retailer 6£1,771 GBP
Retailer 10£2,389 GBP
Retailer 8£2,405 GBP
Brilliant Earth£2,523 GBP
Retailer 15£3,373 GBP

32 data points across 17 retailers

23 retailers£494 GBP to £2,523 GBP

A
Cheapest Retailer
-
£494 GBP
$662 USD
Final sale: no returns
Retailer 2
-
£503 GBP
$674 USD
View
Price last confirmed 29 days ago
Retailer 3
-
£570 GBP
$764 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£584 GBP
$782 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
£631 GBP
$845 USD
View
A
Retailer 6
-
£715 GBP
$958 USD
View
Retailer 7
-
£828 GBP
€1,056 EUR
View
Price last confirmed 8 days ago
A
Retailer 8
-
£840 GBP
$1,126 USD
View
A
Retailer 9
-
£849 GBP
View
A
Retailer 10
-
£940 GBP
ZAR 20,358 ZAR
View
B+
Retailer 11
-
£1,179 GBP
$1,580 USD
View
B+
Retailer 12
-
£1,232 GBP
$1,651 USD
View
B+
Retailer 13
-
£1,592 GBP
View
Retailer 14
-
£1,640 GBP
$2,197 USD
View
Price last confirmed 24 days ago
B+
Retailer 15
-
£1,654 GBP
$2,216 USD
View
B+
Retailer 16
-
£1,723 GBP
SGD 3,120 SGD
View
B+
Retailer 17
-
£1,771 GBP
$2,373 USD
View
B+
Retailer 18
-
£1,914 GBP
$2,565 USD
View
B
Retailer 19
-
£2,389 GBP
View
B
Retailer 20
-
£2,405 GBP
$3,223 USD
View
B
Retailer 21
-
£2,523 GBP
$3,380 USD
View
Retailer 22
-
£3,373 GBP
$4,520 USD
View
Price last confirmed 10 days ago
Most Expensive
Brilliant Earth
20575178A · Sep 28
£4,142 GBP
$5,550 USD
View
Price last confirmed 33 days ago
22 more retailers have this diamond
Prices start from £494 GBPSave up to £2,029 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
1.86ct Radiant
£494 GBP