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Round|Lab Grown|IGI

1.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG781611968

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781611968

Diamond specifications and retailer prices

From £110 GBP
As of November 5, 2026
Save £654 GBP (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £764 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.05ct lab-grown round diamond

This 1.05ct 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 LG781611968 or 781611968. Listed at 19 retailers as of November 4, 2026, with prices from £110 to £764, a £654 spread on the same certified stone. Reve Diamonds lists it at £764. 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

1.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781611968
Dimensions6.58 × 6.54 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.58 mm6.54 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781611968
Side View
Table 57.0%Crown 33.7°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £267 GBP|Low: £105 GBP|High: £764 GBP|Avg: £327 GBP|-1.1%
Retailer 1
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Reve Diamonds
November 5, 2026
Retailer 6£110 GBP
Retailer 4£123 GBP
Retailer 3£137 GBP
Retailer 15£137 GBP
Retailer 8£233 GBP
Retailer 2£252 GBP
Retailer 1£267 GBP
Retailer 11£267 GBP
Retailer 10£286 GBP
Retailer 14£319 GBP
Retailer 7£438 GBP
Retailer 13£464 GBP
Retailer 5£479 GBP
Retailer 12£490 GBP
Retailer 9£635 GBP
Reve Diamonds£764 GBP

37 data points across 16 retailers

19 retailers£110 GBP to £764 GBP

A
Cheapest Retailer
-
£110 GBP
A
Retailer 2
-
£123 GBP
View
Final sale: no returns
A
Retailer 3
-
£137 GBP
View
Retailer 4
-
£137 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£219 GBP
View
A
Retailer 6
-
£233 GBP
View
A
Retailer 7
-
£252 GBP
View
B+
Retailer 8
-
£267 GBP
View
A
Retailer 9
-
£267 GBP
View
B+
Retailer 10
-
£286 GBP
View
B+
Retailer 11
-
£319 GBP
View
B+
Retailer 12
-
£369 GBP
View
Retailer 13
-
£435 GBP
View
Price last confirmed 46 days ago
B
Retailer 14
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£438 GBP
View
B
Retailer 15
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£464 GBP
View
B
Retailer 16
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£479 GBP
View
B
Retailer 17
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£490 GBP
View
B
Retailer 18
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£635 GBP
View
Most Expensive
B
Reve Diamonds
62C6B3245 · Nov 4
£764 GBP
$1,028 USD
View
18 more retailers have this diamond
Prices start from £110 GBPSave up to £654 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
1.05ct Round
£110 GBP