Radiant|Lab Grown|IGI

1.00ct E FL Radiant Lab Grown Diamond

VG • E/FL • IGI LG816658166

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

Certificate IGI LG816658166

Diamond specifications and retailer prices

From £852 GBP
$1,142 USD
As of October 30, 2026
Save £1,193 GBP (58%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,102 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816658166 or 816658166. Listed at 18 retailers as of October 28, 2026, with a 140% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816658166
Dimensions7.19 × 4.77 × 3.31 mm
L/W Ratio1.51
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
7.19 mm4.77 mm1.00 ctE / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816658166
Side View
Table 63.0%Crown 44.4°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 69.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,237 GBP|Low: £852 GBP|High: £3,888 GBP|Avg: £1,910 GBP|-1.2%
Retailer 1
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
Reve Diamonds
October 30, 2026
Retailer 15£852 GBP
Retailer 14£928 GBP
Retailer 16£954 GBP
Retailer 10£989 GBP
Retailer 7£1,119 GBP
Retailer 2£1,172 GBP
Retailer 1£1,237 GBP
Retailer 9£1,397 GBP
Retailer 4£1,448 GBP
Retailer 3£1,663 GBP
Retailer 5£1,717 GBP
Retailer 11£2,006 GBP
Retailer 13£2,046 GBP
Retailer 6£2,639 GBP
Retailer 8£2,776 GBP
Reve Diamonds£3,102 GBP
Retailer 12£3,525 GBP
Retailer 17£3,873 GBP

29 data points across 18 retailers

18 retailers£852 GBP to £2,046 GBP

B+
Cheapest Retailer
-
£852 GBP
$1,142 USD
B+
Retailer 2
-
£928 GBP
$1,243 USD
View
B
Retailer 3
-
£954 GBP
$1,278 USD
View
Final sale: no returns
B
Retailer 4
-
£989 GBP
$1,325 USD
View
B
Retailer 5
-
£1,119 GBP
$1,500 USD
View
B
Retailer 6
-
£1,172 GBP
$1,571 USD
View
B
Retailer 7
-
£1,237 GBP
View
B
Retailer 8
-
£1,397 GBP
$1,872 USD
View
Retailer 9
-
£1,448 GBP
$1,940 USD
View
Price last confirmed 9 days ago
Retailer 10
-
£1,663 GBP
€2,122 EUR
View
Price last confirmed 7 days ago
B
Retailer 11
-
£1,717 GBP
$2,300 USD
View
B
Retailer 12
-
£2,006 GBP
ZAR 43,429 ZAR
View
B
Retailer 13
-
£2,046 GBP
$2,741 USD
View
Retailer 14
-
£2,639 GBP
View
Price under review
Retailer 15
-
£2,776 GBP
CA$5,166 CAD
View
Price under review
Most Expensive
Reve Diamonds
5AAB4C22F · Oct 30
£3,102 GBP
$4,157 USD
View
Price under review
15 more retailers have this diamond
Prices start from £852 GBPSave up to £1,193 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.

B+
1.00ct Radiant
£852 GBP