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Radiant|Lab Grown|IGI

1.00ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG632434291

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

Certificate IGI LG632434291

Diamond specifications and retailer prices

From £120 GBP
As of November 6, 2026
Save £676 GBP (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £796 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1ct lab-grown radiant diamond

This 1ct 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 LG632434291 or 632434291. Listed at 20 retailers as of November 6, 2026, with prices from £120 to £796, a £676 spread on the same certified stone. Reve Diamonds lists it at £796. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632434291
Dimensions7.09 × 5.03 × 3.29 mm
L/W Ratio1.41
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
7.09 mm5.03 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632434291
Side View
Table 62.0%Crown 38.3°Girdle: MediumPavilion 33.5°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £286 GBP|Low: £114 GBP|High: £796 GBP|Avg: £349 GBP|+9.7%
Retailer 1
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Retailer 15
Reve Diamonds
November 6, 2026
Retailer 13£120 GBP
Retailer 4£133 GBP
Retailer 12£138 GBP
Retailer 2£148 GBP
Retailer 3£148 GBP
Retailer 7£239 GBP
Retailer 8£257 GBP
Retailer 15£268 GBP
Retailer 1£286 GBP
Retailer 6£288 GBP
Retailer 14£329 GBP
Retailer 9£501 GBP
Retailer 11£503 GBP
Retailer 5£516 GBP
Retailer 10£690 GBP
Reve Diamonds£796 GBP

42 data points across 16 retailers

20 retailers£120 GBP to £796 GBP

A
Cheapest Retailer
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£120 GBP
A
Retailer 2
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£133 GBP
View
Final sale: no returns
A
Retailer 3
-
£138 GBP
View
Retailer 4
-
£148 GBP
View
Price last confirmed 13 days ago
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Retailer 5
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£148 GBP
View
A
Retailer 6
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£239 GBP
View
A
Retailer 7
-
£257 GBP
View
A
Retailer 8
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£268 GBP
View
B+
Retailer 9
-
£286 GBP
View
Retailer 10
-
£288 GBP
View
Price last confirmed 29 days ago
B+
Retailer 11
-
£329 GBP
View
B+
Retailer 12
-
£350 GBP
View
Retailer 13
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£409 GBP
View
Price last confirmed 68 days ago
B+
Retailer 14
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£411 GBP
View
B
Retailer 15
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£493 GBP
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B
Retailer 16
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£501 GBP
View
B
Retailer 17
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£503 GBP
View
B
Retailer 18
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£516 GBP
View
B
Retailer 19
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£690 GBP
View
Most Expensive
B
Reve Diamonds
A5C211770 · Nov 6
£796 GBP
$1,065 USD
View
19 more retailers have this diamond
Prices start from £120 GBPSave up to £676 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
1.00ct Radiant
£120 GBP