Radiant|Lab Grown|IGI

1.53ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG786671178

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

Certificate IGI LG786671178

Diamond specifications and retailer prices

From £216 GBP
$290 USD
As of October 30, 2026
Save £888 GBP (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,698 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.53ct lab-grown radiant diamond

This 1.53ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786671178 or 786671178. Listed at 20 retailers as of October 30, 2026, with a 410% 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

1.53
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786671178
Dimensions8.10 × 5.68 × 3.99 mm
L/W Ratio1.43
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
8.10 mm5.68 mm1.53 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786671178
Side View
Table 58.0%Crown 40.1°Girdle: Slightly ThickPavilion 35.6°Culet: NoneDepth 70.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £1,698 GBP|Low: £216 GBP|High: £1,724 GBP|Avg: £648 GBP|-1.5%
Rare Carat
Retailer 2
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Retailer 11
Retailer 12
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Retailer 19
November 1, 2026
Retailer 11£216 GBP
Retailer 19£241 GBP
Retailer 15£268 GBP
Retailer 9£269 GBP
Retailer 14£399 GBP
Retailer 12£433 GBP
Retailer 7£441 GBP
Retailer 4£461 GBP
Retailer 17£463 GBP
Retailer 2£474 GBP
Retailer 18£623 GBP
Retailer 6£708 GBP
Retailer 10£774 GBP
Retailer 8£840 GBP
Retailer 3£898 GBP
Retailer 13£1,031 GBP
Retailer 16£1,080 GBP
Retailer 5£1,104 GBP
Rare Carat£1,698 GBP

36 data points across 19 retailers

20 retailers£216 GBP to £1,104 GBP

A
Cheapest Retailer
-
£216 GBP
$290 USD
A
Retailer 2
-
£241 GBP
$323 USD
View
Final sale: no returns
A
Retailer 3
-
£268 GBP
$359 USD
View
A
Retailer 4
-
£269 GBP
$360 USD
View
A
Retailer 5
-
£399 GBP
$535 USD
View
A
Retailer 6
-
£433 GBP
€552 EUR
View
A
Retailer 7
-
£441 GBP
$591 USD
View
A
Retailer 8
-
£461 GBP
ZAR 9,970 ZAR
View
A
Retailer 9
-
£463 GBP
$620 USD
View
A
Retailer 10
-
£474 GBP
View
A
Retailer 11
-
£623 GBP
A$1,285 AUD
View
A
Retailer 12
-
£708 GBP
$949 USD
View
B+
Retailer 13
-
£774 GBP
$1,037 USD
View
B+
Retailer 14
-
£840 GBP
$1,126 USD
View
B+
Retailer 15
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£898 GBP
$1,203 USD
View
B+
Retailer 16
-
£960 GBP
$1,286 USD
View
B+
Retailer 17
-
£1,031 GBP
$1,382 USD
View
B+
Retailer 18
-
£1,080 GBP
View
B+
Retailer 19
-
£1,104 GBP
$1,480 USD
View
Most Expensive
Rare Carat
F-666-384 · Oct 18
£1,698 GBP
$2,275 USD
View
Price last confirmed 13 days ago
19 more retailers have this diamond
Prices start from £216 GBPSave up to £888 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
1.53ct Radiant
£216 GBP