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Round|Lab Grown|IGI

0.30ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG480170757

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480170757

Diamond specifications and retailer prices

From $117 AUD
$82 USD
As of October 29, 2026
Save $521 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,074 AUD at MOH London · As of October 21, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG480170757 or 480170757. Listed at 10 retailers as of October 29, 2026, with a 447% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480170757
Dimensions4.22 × 4.20 × 2.70 mm
L/W Ratio1.00
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
4.22 mm4.20 mm0.30 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG480170757
Side View
Table 57.5%Crown 36°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 64.1%

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: Oct 29
Current: $1,074 AUD|Low: $112 AUD|High: $1,081 AUD|Avg: $316 AUD|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 3$117 AUD
Retailer 8$137 AUD
Retailer 4$155 AUD
Retailer 6$155 AUD
Retailer 10$208 AUD
Retailer 2$259 AUD
Retailer 9$299 AUD
Retailer 5$316 AUD
Retailer 7$468 AUD
MOH London$1,074 AUD

41 data points across 10 retailers

10 retailers$117 AUD to $638 AUD

A
Cheapest Retailer
-
$117 AUD
$82 USD
B+
Retailer 2
-
$137 AUD
$96 USD
View
B+
Retailer 3
-
$155 AUD
$109 USD
View
B+
Retailer 4
-
$155 AUD
$109 USD
View
B+
Retailer 5
-
$259 AUD
£143 GBP
View
B+
Retailer 6
-
$299 AUD
$210 USD
View
B+
Retailer 7
-
$316 AUD
$222 USD
View
B
Retailer 8
-
$468 AUD
$329 USD
View
B
Retailer 9
-
$638 AUD
£353 GBP
View
Most Expensive
MOH London
LG480170757 · Oct 21
$1,074 AUD
£594 GBP
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from $117 AUDSave up to $521 AUD

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
$117 AUD