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Round|Lab Grown|IGI

3.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG696574990

Shape and cutting style on the report: Round brilliant

Certificate IGI LG696574990

Diamond specifications and retailer prices

From £298 GBP
As of November 5, 2026
Save £3,224 GBP (92%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,522 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3.05ct lab-grown round diamond

This 3.05ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG696574990 or 696574990. Listed at 19 retailers as of November 5, 2026, with prices from £298 to £3,522, a £3,224 spread on the same certified stone. Brilliant Earth lists it at £3,522. 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

3.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG696574990
Dimensions9.35 × 9.28 × 5.71 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.35 mm9.28 mm3.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG696574990
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.3%

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: £3,522 GBP|Low: £286 GBP|High: £3,522 GBP|Avg: £932 GBP|+21.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10£298 GBP
Retailer 8£333 GBP
Retailer 11£369 GBP
Retailer 7£479 GBP
Retailer 3£490 GBP
Retailer 4£541 GBP
Retailer 2£665 GBP
Retailer 9£1,036 GBP
Retailer 6£1,415 GBP
Retailer 5£1,493 GBP
Brilliant Earth£3,522 GBP

39 data points across 11 retailers

19 retailers£298 GBP to £3,522 GBP

A
Cheapest Retailer
-
£298 GBP
A
Retailer 2
-
£333 GBP
View
Final sale: no returns
A
Retailer 3
-
£334 GBP
View
Retailer 4
-
£369 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£369 GBP
View
A
Retailer 6
-
£479 GBP
View
B+
Retailer 7
-
£490 GBP
View
A
Retailer 8
-
£541 GBP
View
A
Retailer 9
-
£595 GBP
View
A
Retailer 10
-
£639 GBP
View
A
Retailer 11
-
£665 GBP
View
B+
Retailer 12
-
£1,036 GBP
View
B
Retailer 13
-
£1,310 GBP
View
B
Retailer 14
-
£1,356 GBP
View
B
Retailer 15
-
£1,415 GBP
View
B
Retailer 16
-
£1,421 GBP
View
B
Retailer 17
-
£1,493 GBP
View
B
Retailer 18
-
£2,645 GBP
View
Most Expensive
B
Brilliant Earth
16265180A · Nov 5
£3,522 GBP
$4,740 USD
View
18 more retailers have this diamond
Prices start from £298 GBPSave up to £3,224 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
3.05ct Round
£298 GBP