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Round|Lab Grown|IGI

1.12ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG677564731

Shape and cutting style on the report: Round brilliant

Certificate IGI LG677564731

Diamond specifications and retailer prices

From £115 GBP
As of November 5, 2026
Save £665 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £780 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.12ct lab-grown round diamond

This 1.12ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG677564731 or 677564731. Listed at 15 retailers as of November 5, 2026, with prices from £115 to £780, a £665 spread on the same certified stone. Reve Diamonds lists it at £780. 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

1.12
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677564731
Dimensions6.65 × 6.63 × 4.12 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
6.65 mm6.63 mm1.12 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677564731
Side View
Table 58.0%Crown 34.6°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
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: £245 GBP|Low: £115 GBP|High: £780 GBP|Avg: £305 GBP|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
November 6, 2026
Retailer 4£115 GBP
Retailer 2£129 GBP
Retailer 3£134 GBP
Retailer 14£143 GBP
Retailer 6£154 GBP
Retailer 1£245 GBP
Retailer 11£261 GBP
Retailer 7£267 GBP
Retailer 12£267 GBP
Retailer 10£383 GBP
Retailer 13£459 GBP
Retailer 9£485 GBP
Retailer 5£500 GBP
Retailer 8£668 GBP
Reve Diamonds£780 GBP

42 data points across 15 retailers

15 retailers£115 GBP to £780 GBP

A
Cheapest Retailer
-
£115 GBP
A
Retailer 2
-
£129 GBP
View
Final sale: no returns
A
Retailer 3
-
£134 GBP
View
A
Retailer 4
-
£143 GBP
View
Retailer 5
-
£154 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£245 GBP
View
A
Retailer 7
-
£261 GBP
View
A
Retailer 8
-
£267 GBP
View
B+
Retailer 9
-
£267 GBP
View
B
Retailer 10
-
£383 GBP
View
B
Retailer 11
-
£459 GBP
View
B
Retailer 12
-
£485 GBP
View
B
Retailer 13
-
£500 GBP
View
B
Retailer 14
-
£668 GBP
View
Most Expensive
B
Reve Diamonds
EA4B74DDF · Nov 6
£780 GBP
$1,050 USD
View
14 more retailers have this diamond
Prices start from £115 GBPSave up to £665 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
1.12ct Round
£115 GBP