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Radiant|Lab Grown|IGI

1.01ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG591396148

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

Certificate IGI LG591396148

Diamond specifications and retailer prices

From £104 GBP
$140 USD
As of October 30, 2026
Save £644 GBP (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £748 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.01ct lab-grown radiant diamond

This 1.01ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591396148 or 591396148. Listed at 19 retailers as of October 30, 2026, with prices from £104 to £748, a £644 spread on the same certified stone. Reve Diamonds lists it at £748. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591396148
Dimensions7.19 × 4.89 × 3.21 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.19 mm4.89 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591396148
Side View
Table 65.0%Crown 40.3°Girdle: Slightly ThickPavilionCulet: NoneDepth 65.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £220 GBP|Low: £101 GBP|High: £613 GBP|Avg: £275 GBP|+3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
October 31, 2026
Retailer 13£104 GBP
Retailer 6£117 GBP
Retailer 3£122 GBP
Retailer 4£130 GBP
Retailer 15£130 GBP
Retailer 7£178 GBP
Retailer 1£220 GBP
Retailer 11£240 GBP
Retailer 9£246 GBP
Retailer 5£313 GBP
Retailer 12£331 GBP
Retailer 2£417 GBP
Retailer 10£422 GBP
Retailer 14£478 GBP
Retailer 8£609 GBP

44 data points across 15 retailers

19 retailers£104 GBP to £748 GBP

A
Cheapest Retailer
-
£104 GBP
$140 USD
A
Retailer 2
-
£117 GBP
$157 USD
View
Final sale: no returns
A
Retailer 3
-
£122 GBP
$163 USD
View
A
Retailer 4
-
£130 GBP
$174 USD
View
A
Retailer 5
-
£130 GBP
$174 USD
View
B+
Retailer 6
-
£178 GBP
$238 USD
View
A
Retailer 7
-
£220 GBP
View
A
Retailer 8
-
£237 GBP
$318 USD
View
Retailer 9
-
£240 GBP
€306 EUR
View
Price last confirmed 8 days ago
A
Retailer 10
-
£246 GBP
View
B+
Retailer 11
-
£313 GBP
$419 USD
View
B+
Retailer 12
-
£331 GBP
$443 USD
View
B+
Retailer 13
-
£360 GBP
View
B+
Retailer 14
-
£417 GBP
$559 USD
View
Retailer 15
-
£422 GBP
$565 USD
View
Price last confirmed 10 days ago
B
Retailer 16
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£458 GBP
$614 USD
View
B
Retailer 17
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£478 GBP
$640 USD
View
B
Retailer 18
-
£609 GBP
View
Most Expensive
B
Reve Diamonds
86AE2B38E · Oct 30
£748 GBP
$1,003 USD
View
18 more retailers have this diamond
Prices start from £104 GBPSave up to £644 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
1.01ct Radiant
£104 GBP