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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 $145 NZD
$82 USD
As of November 1, 2026
Save $1,186 NZD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,332 NZD at MOH London · As of November 1, 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 November 1, 2026, with prices from $145 to $1,332, a $1,186 spread on the same certified stone. MOH London lists it at $1,332. 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: Nov 1
Current: $1,332 NZD|Low: $140 NZD|High: $1,348 NZD|Avg: $394 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3$145 NZD
Retailer 8$170 NZD
Retailer 4$193 NZD
Retailer 6$193 NZD
Retailer 10$259 NZD
Retailer 2$320 NZD
Retailer 9$373 NZD
Retailer 5$394 NZD
Retailer 7$584 NZD
MOH London$1,332 NZD

42 data points across 10 retailers

10 retailers$145 NZD to $1,332 NZD

A
Cheapest Retailer
-
$145 NZD
$82 USD
B+
Retailer 2
-
$170 NZD
$96 USD
View
B+
Retailer 3
-
$193 NZD
$109 USD
View
B+
Retailer 4
-
$193 NZD
$109 USD
View
B+
Retailer 5
-
$320 NZD
£142 GBP
View
B+
Retailer 6
-
$373 NZD
$210 USD
View
B+
Retailer 7
-
$394 NZD
$222 USD
View
B
Retailer 8
-
$584 NZD
$329 USD
View
B
Retailer 9
-
$795 NZD
£353 GBP
View
Most Expensive
B
MOH London
LG480170757 · Nov 1
$1,332 NZD
£591 GBP
View
9 more retailers have this diamond
Prices start from $145 NZDSave up to $1,186 NZD

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
$145 NZD