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Radiant|Lab Grown|IGI

1.59ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG644408295

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

Certificate IGI LG644408295

Diamond specifications and retailer prices

From £228 GBP
$304 USD
As of October 27, 2026
Save £917 GBP (80%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,716 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.59ct lab-grown radiant diamond

This 1.59ct 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 LG644408295 or 644408295. Listed at 24 retailers as of October 27, 2026, with a 402% 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

1.59
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644408295
Dimensions8.13 × 5.86 × 3.96 mm
L/W Ratio1.39
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
8.13 mm5.86 mm1.59 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644408295
Side View
Table 61.0%Crown 40.8°Girdle: MediumPavilion 35.8°Culet: NoneDepth 67.6%

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 27
Current: £1,716 GBP|Low: £217 GBP|High: £1,738 GBP|Avg: £690 GBP|-1.3%
Rare Carat
Retailer 2
Retailer 3
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Retailer 11
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Retailer 21
October 29, 2026
Retailer 3£228 GBP
Retailer 20£265 GBP
Retailer 15£270 GBP
Retailer 6£283 GBP
Retailer 10£283 GBP
Retailer 17£402 GBP
Retailer 8£462 GBP
Retailer 5£480 GBP
Retailer 16£486 GBP
Retailer 2£501 GBP
Retailer 19£520 GBP
Retailer 13£659 GBP
Retailer 7£728 GBP
Retailer 21£837 GBP
Retailer 4£909 GBP
Retailer 11£945 GBP
Retailer 14£1,045 GBP
Retailer 18£1,136 GBP
Retailer 12£1,138 GBP
Retailer 9£1,145 GBP
Rare Carat£1,716 GBP

37 data points across 21 retailers

24 retailers£228 GBP to £1,145 GBP

A
Cheapest Retailer
-
£228 GBP
$304 USD
A
Retailer 2
-
£265 GBP
$353 USD
View
A
Retailer 3
-
£270 GBP
$359 USD
View
Final sale: no returns
A
Retailer 4
-
£283 GBP
$377 USD
View
A
Retailer 5
-
£283 GBP
$377 USD
View
A
Retailer 6
-
£402 GBP
$535 USD
View
A
Retailer 7
-
£462 GBP
$615 USD
View
A
Retailer 8
-
£480 GBP
$639 USD
View
A
Retailer 9
-
£486 GBP
ZAR 10,460 ZAR
View
A
Retailer 10
-
£501 GBP
View
A
Retailer 11
-
£520 GBP
€660 EUR
View
A
Retailer 12
-
£659 GBP
A$1,351 AUD
View
A
Retailer 13
-
£728 GBP
$969 USD
View
B+
Retailer 14
-
£837 GBP
$1,115 USD
View
B+
Retailer 15
-
£909 GBP
$1,211 USD
View
B+
Retailer 16
-
£936 GBP
$1,246 USD
View
B+
Retailer 17
-
£945 GBP
$1,258 USD
View
B+
Retailer 18
-
£1,045 GBP
$1,392 USD
View
B+
Retailer 19
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£1,078 GBP
$1,436 USD
View
B+
Retailer 20
-
£1,124 GBP
View
B+
Retailer 21
-
£1,136 GBP
View
B+
Retailer 22
-
£1,138 GBP
A$2,332 AUD
View
Price last confirmed 21 days ago
B+
Retailer 23
-
£1,145 GBP
$1,525 USD
View
Most Expensive
B
Rare Carat
13130 · Oct 18
£1,716 GBP
$2,285 USD
View
Price last confirmed 11 days ago
23 more retailers have this diamond
Prices start from £228 GBPSave up to £917 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
1.59ct Radiant
£228 GBP