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Round|Lab Grown|IGI

3.00ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG485136507

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136507

Diamond specifications and retailer prices

From £3,412 GBP
As of November 5, 2026
Save £4,761 GBP (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £8,172 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3ct lab-grown round diamond

This 3ct lab-grown round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485136507 or 485136507. Listed at 9 retailers as of November 5, 2026, with prices from £3,412 to £8,172, a £4,761 spread on the same certified stone. MOH London lists it at £8,172. 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

3.00
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136507
Dimensions9.42 × 9.36 × 5.48 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.42 mm9.36 mm3.00 ctK / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136507
Side View
Table 61.0%Crown 32.3°Girdle: Slightly ThickPavilion 40.1°Culet: NoneDepth 58.4%

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: £8,172 GBP|Low: £3,412 GBP|High: £8,305 GBP|Avg: £5,237 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4£3,412 GBP
Retailer 5£3,958 GBP
Retailer 2£3,960 GBP
Retailer 7£4,392 GBP
Retailer 3£5,055 GBP
Retailer 6£6,121 GBP
MOH London£8,172 GBP

17 data points across 7 retailers

9 retailers£3,412 GBP to £8,172 GBP

A
Cheapest Retailer
-
£3,412 GBP
B+
Retailer 2
-
£3,575 GBP
View
B+
Retailer 3
-
£3,958 GBP
View
Retailer 4
-
£3,958 GBP
View
Price last confirmed 25 days ago
B+
Retailer 5
-
£3,960 GBP
View
B
Retailer 6
-
£4,945 GBP
View
B
Retailer 7
-
£5,055 GBP
View
B
Retailer 8
-
£6,121 GBP
View
Most Expensive
B
MOH London
LG485136507 · Nov 5
£8,172 GBP
View
8 more retailers have this diamond
Prices start from £3,412 GBPSave up to £4,761 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
3.00ct Round
£3,412 GBP