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Radiant|Lab Grown|IGI

1.16ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG640450800

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

Certificate IGI LG640450800

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of October 30, 2026
Save £1,290 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,440 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.16ct lab-grown radiant diamond

This 1.16ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG640450800 or 640450800. Listed at 22 retailers as of October 30, 2026, with prices from £150 to £1,440, a £1,290 spread on the same certified stone. Do Amore Diamonds lists it at £1,440. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.16
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640450800
Dimensions8.02 × 5.02 × 3.31 mm
L/W Ratio1.60
Culet sizePointed
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
8.02 mm5.02 mm1.16 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640450800
Side View
Table 62.0%Crown 25°Girdle: MediumPavilion 32°Culet: NoneDepth 65.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,440 GBP|Low: £144 GBP|High: £1,440 GBP|Avg: £529 GBP
Do Amore Diamonds
Retailer 2
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Retailer 18
October 30, 2026
Retailer 17£150 GBP
Retailer 6£167 GBP
Retailer 16£174 GBP
Retailer 9£186 GBP
Retailer 18£186 GBP
Retailer 5£323 GBP
Retailer 12£353 GBP
Retailer 3£367 GBP
Retailer 2£382 GBP
Retailer 13£501 GBP
Retailer 15£600 GBP
Retailer 4£660 GBP
Retailer 10£788 GBP
Retailer 8£816 GBP
Retailer 11£827 GBP
Retailer 7£893 GBP
Retailer 14£959 GBP
Do Amore Diamonds£1,440 GBP

42 data points across 18 retailers

22 retailers£150 GBP to £1,440 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£167 GBP
$224 USD
View
Final sale: no returns
A
Retailer 3
-
£174 GBP
$233 USD
View
A
Retailer 4
-
£186 GBP
$249 USD
View
A
Retailer 5
-
£186 GBP
$249 USD
View
A
Retailer 6
-
£287 GBP
HK$3,000 HKD
View
A
Retailer 7
-
£323 GBP
$433 USD
View
A
Retailer 8
-
£353 GBP
ZAR 7,636 ZAR
View
A
Retailer 9
-
£367 GBP
$492 USD
View
A
Retailer 10
-
£382 GBP
View
A
Retailer 11
-
£418 GBP
$560 USD
View
A
Retailer 12
-
£501 GBP
A$1,033 AUD
View
B+
Retailer 13
-
£600 GBP
$804 USD
View
B+
Retailer 14
-
£660 GBP
$884 USD
View
B+
Retailer 15
-
£788 GBP
$1,056 USD
View
B+
Retailer 16
-
£808 GBP
View
B+
Retailer 17
-
£816 GBP
SGD 1,477 SGD
View
B+
Retailer 18
-
£827 GBP
View
B
Retailer 19
-
£893 GBP
$1,197 USD
View
Retailer 20
-
£959 GBP
$1,285 USD
View
Price last confirmed 13 days ago
B
Retailer 21
-
£1,203 GBP
View
Most Expensive
B
Do Amore Diamonds
27-036DAFBF5 · Oct 31
£1,440 GBP
$1,930 USD
View
21 more retailers have this diamond
Prices start from £150 GBPSave up to £1,290 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
1.16ct Radiant
£150 GBP