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Round|Lab Grown|IGI

1.22ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG715523829

Shape and cutting style on the report: Round brilliant

Certificate IGI LG715523829

Diamond specifications and retailer prices

From £138 GBP
As of November 5, 2026
Save £716 GBP (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £854 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.22ct lab-grown round diamond

This 1.22ct lab-grown round 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 LG715523829 or 715523829. Listed at 22 retailers as of November 5, 2026, with prices from £138 to £854, a £716 spread on the same certified stone. Reve Diamonds lists it at £854. 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

1.22
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG715523829
Dimensions6.84 × 6.82 × 4.26 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.84 mm6.82 mm1.22 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG715523829
Side View
Table 57.0%Crown 35.2°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.4%

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: Nov 5
Current: £337 GBP|Low: £132 GBP|High: £854 GBP|Avg: £371 GBP|-1.1%
Retailer 1
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Retailer 18
Reve Diamonds
November 6, 2026
Retailer 9£138 GBP
Retailer 4£154 GBP
Retailer 17£160 GBP
Retailer 5£172 GBP
Retailer 6£172 GBP
Retailer 18£289 GBP
Retailer 7£302 GBP
Retailer 12£307 GBP
Retailer 11£328 GBP
Retailer 1£337 GBP
Retailer 3£355 GBP
Retailer 2£357 GBP
Retailer 16£385 GBP
Retailer 13£446 GBP
Retailer 10£551 GBP
Retailer 15£583 GBP
Retailer 8£591 GBP
Retailer 14£799 GBP
Reve Diamonds£854 GBP

43 data points across 19 retailers

22 retailers£138 GBP to £854 GBP

A
Cheapest Retailer
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£138 GBP
A
Retailer 2
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£154 GBP
View
Final sale: no returns
A
Retailer 3
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£160 GBP
View
A
Retailer 4
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£172 GBP
View
Retailer 5
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£172 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
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£289 GBP
View
B+
Retailer 7
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£302 GBP
View
B+
Retailer 8
-
£307 GBP
View
B+
Retailer 9
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£328 GBP
View
B+
Retailer 10
-
£337 GBP
View
B+
Retailer 11
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£355 GBP
View
B+
Retailer 12
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£357 GBP
View
B+
Retailer 13
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£385 GBP
View
B+
Retailer 14
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£446 GBP
View
B+
Retailer 15
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£446 GBP
View
B+
Retailer 16
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£463 GBP
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Retailer 17
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£547 GBP
View
Price last confirmed 46 days ago
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Retailer 18
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£551 GBP
View
B
Retailer 19
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£583 GBP
View
B
Retailer 20
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£591 GBP
View
B
Retailer 21
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£799 GBP
View
Most Expensive
B
Reve Diamonds
F92F600AF · Nov 6
£854 GBP
$1,149 USD
View
21 more retailers have this diamond
Prices start from £138 GBPSave up to £716 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
1.22ct Round
£138 GBP