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Radiant|Lab Grown|IGI

1.17ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG631429445

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

Certificate IGI LG631429445

Diamond specifications and retailer prices

From £155 GBP
$208 USD
As of October 30, 2026
Save £1,136 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,291 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.17ct lab-grown radiant diamond

This 1.17ct 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 LG631429445 or 631429445. Listed at 22 retailers as of October 30, 2026, with prices from £155 to £1,291, a £1,136 spread on the same certified stone. Brilliant Earth lists it at £1,291. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.17
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631429445
Dimensions5.18 × 5.18 × 3.55 mm
L/W Ratio1.00
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
5.18 mm5.18 mm1.17 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631429445
Side View
Table 63.0%Crown 36.4°Girdle: Slightly ThickPavilion 34.8°Culet: NoneDepth 68.5%

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: £1,291 GBP|Low: £149 GBP|High: £1,672 GBP|Avg: £454 GBP|-22.8%
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
Retailer 18
November 1, 2026
Retailer 4£155 GBP
Retailer 10£173 GBP
Retailer 13£181 GBP
Retailer 5£193 GBP
Retailer 7£193 GBP
Retailer 17£331 GBP
Retailer 12£352 GBP
Retailer 11£355 GBP
Retailer 8£373 GBP
Retailer 18£471 GBP
Retailer 9£543 GBP
Retailer 6£619 GBP
Retailer 15£622 GBP
Retailer 14£659 GBP
Retailer 3£747 GBP
Retailer 16£776 GBP
Retailer 2£910 GBP
Brilliant Earth£1,291 GBP

44 data points across 18 retailers

22 retailers£155 GBP to £1,291 GBP

A
Cheapest Retailer
-
£155 GBP
$208 USD
A
Retailer 2
-
£173 GBP
$232 USD
View
Final sale: no returns
A
Retailer 3
-
£181 GBP
$242 USD
View
Retailer 4
-
£190 GBP
$255 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
£193 GBP
$258 USD
View
Retailer 6
-
£193 GBP
$258 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£260 GBP
$348 USD
View
A
Retailer 8
-
£331 GBP
ZAR 7,165 ZAR
View
A
Retailer 9
-
£352 GBP
€449 EUR
View
A
Retailer 10
-
£355 GBP
View
A
Retailer 11
-
£373 GBP
$500 USD
View
A
Retailer 12
-
£471 GBP
A$971 AUD
View
B+
Retailer 13
-
£501 GBP
$671 USD
View
B+
Retailer 14
-
£524 GBP
View
B+
Retailer 15
-
£543 GBP
$727 USD
View
B+
Retailer 16
-
£619 GBP
$830 USD
View
B+
Retailer 17
-
£622 GBP
$833 USD
View
B+
Retailer 18
-
£659 GBP
$883 USD
View
B+
Retailer 19
-
£747 GBP
A$1,540 AUD
View
B+
Retailer 20
-
£776 GBP
View
B
Retailer 21
-
£910 GBP
$1,220 USD
View
Most Expensive
B
Brilliant Earth
14079215A · Oct 31
£1,291 GBP
$1,730 USD
View
21 more retailers have this diamond
Prices start from £155 GBPSave up to £1,136 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
1.17ct Radiant
£155 GBP