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Round|Lab Grown|IGI

1.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG780697404

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780697404

Diamond specifications and retailer prices

From £103 GBP
As of November 3, 2026
Save £636 GBP (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £739 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 LG780697404 or 780697404. Listed at 20 retailers as of November 3, 2026, with prices from £103 to £739, a £636 spread on the same certified stone. Reve Diamonds lists it at £739. 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 angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780697404
Dimensions6.53 × 6.50 × 4.03 mm
L/W Ratio1.00
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
6.53 mm6.50 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780697404
Side View
Table 58.0%Crown 35.3°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.9%

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 3
Current: £213 GBP|Low: £100 GBP|High: £739 GBP|Avg: £300 GBP|+2.1%
Retailer 1
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Retailer 18
Reve Diamonds
November 5, 2026
Retailer 3£103 GBP
Retailer 6£114 GBP
Retailer 17£119 GBP
Retailer 7£127 GBP
Retailer 18£127 GBP
Retailer 1£213 GBP
Retailer 2£216 GBP
Retailer 13£224 GBP
Retailer 8£237 GBP
Retailer 11£250 GBP
Retailer 12£286 GBP
Retailer 15£299 GBP
Retailer 9£348 GBP
Retailer 5£366 GBP
Retailer 4£408 GBP
Retailer 16£431 GBP
Retailer 10£449 GBP
Retailer 14£592 GBP
Reve Diamonds£739 GBP

36 data points across 19 retailers

20 retailers£103 GBP to £739 GBP

A
Cheapest Retailer
-
£103 GBP
A
Retailer 2
-
£114 GBP
View
Final sale: no returns
A
Retailer 3
-
£119 GBP
View
Retailer 4
-
£127 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£127 GBP
View
A
Retailer 6
-
£213 GBP
View
A
Retailer 7
-
£216 GBP
View
A
Retailer 8
-
£224 GBP
View
A
Retailer 9
-
£237 GBP
View
A
Retailer 10
-
£250 GBP
View
B+
Retailer 11
-
£286 GBP
View
B+
Retailer 12
-
£299 GBP
View
Retailer 13
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£317 GBP
View
Price last confirmed 9 days ago
B+
Retailer 14
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£348 GBP
View
B+
Retailer 15
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£366 GBP
View
B
Retailer 16
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£408 GBP
View
B
Retailer 17
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£431 GBP
View
B
Retailer 18
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£449 GBP
View
B
Retailer 19
-
£592 GBP
View
Most Expensive
B
Reve Diamonds
4F5867411 · Nov 4
£739 GBP
$995 USD
View
19 more retailers have this diamond
Prices start from £103 GBPSave up to £636 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
£103 GBP