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Round|Lab Grown|IGI

0.30ct G SI2 Round Lab Grown Diamond

VG • G/SI2 • IGI LG480171528

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480171528

Diamond specifications and retailer prices

From £110 GBP
$146 USD
As of October 29, 2026
Save £528 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £638 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.3ct lab-grown round diamond

This 0.3ct lab-grown round sits in the sub-half-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG480171528 or 480171528. Listed at 10 retailers as of October 29, 2026, with prices from £110 to £638, a £528 spread on the same certified stone. MOH London lists it at £638. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.30
Carat
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480171528
Dimensions4.31 × 4.27 × 2.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Blue 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
4.31 mm4.27 mm0.30 ctG / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG480171528
Side View
Table 58.0%Crown 37.2°Girdle: THN-MEDPavilion 40.3°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £638 GBP|Low: £105 GBP|High: £643 GBP|Avg: £257 GBP|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 4£110 GBP
Retailer 7£127 GBP
Retailer 5£136 GBP
Retailer 10£148 GBP
Retailer 8£158 GBP
Retailer 6£252 GBP
Retailer 3£284 GBP
Retailer 2£290 GBP
Retailer 11£296 GBP
Retailer 9£337 GBP
MOH London£638 GBP

16 data points across 11 retailers

10 retailers£110 GBP to £638 GBP

A
Cheapest Retailer
-
£110 GBP
$146 USD
B+
Retailer 2
-
£127 GBP
$169 USD
View
B+
Retailer 3
-
£136 GBP
$181 USD
View
B+
Retailer 4
-
£136 GBP
$181 USD
View
B+
Retailer 5
-
£158 GBP
$210 USD
View
B
Retailer 6
-
£252 GBP
$335 USD
View
B
Retailer 7
-
£290 GBP
€368 EUR
View
B
Retailer 8
-
£296 GBP
View
B
Retailer 9
-
£436 GBP
$581 USD
View
Most Expensive
B
MOH London
LG480171528 · Oct 29
£638 GBP
View
9 more retailers have this diamond
Prices start from £110 GBPSave up to £528 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
0.30ct Round
£110 GBP