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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 $146 USD
As of October 29, 2026
Save $704 USD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $850 USD 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 $146 to $850, a $704 spread on the same certified stone. MOH London lists it at $850. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $850 USD|Low: $140 USD|High: $856 USD|Avg: $342 USD|+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$146 USD
Retailer 7$169 USD
Retailer 5$181 USD
Retailer 10$198 USD
Retailer 8$210 USD
Retailer 6$335 USD
Retailer 3$378 USD
Retailer 2$386 USD
Retailer 11$394 USD
Retailer 9$449 USD
MOH London$850 USD

16 data points across 11 retailers

10 retailers$146 USD to $850 USD

A
Cheapest Retailer
-
$146 USD
B+
Retailer 2
-
$169 USD
View
B+
Retailer 3
-
$181 USD
View
B+
Retailer 4
-
$181 USD
View
B+
Retailer 5
-
$210 USD
View
B
Retailer 6
-
$335 USD
View
B
Retailer 7
-
$386 USD
€368 EUR
View
B
Retailer 8
-
$394 USD
£310 GBP
View
B
Retailer 9
-
$581 USD
View
Most Expensive
B
MOH London
LG480171528 · Oct 29
$850 USD
£669 GBP
View
9 more retailers have this diamond
Prices start from $146 USDSave up to $704 USD

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
$146 USD