Round|Lab Grown|GIA

0.30ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • GIA 6241481781

Certificate GIA 6241481781

Diamond specifications and retailer prices

From $355 USD
£280 GBP
As of October 30, 2026
Save $294 USD (45%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $649 USD at MOH London · As of October 26, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6241481781. Listed at 3 retailers as of October 26, 2026, with prices from $355 to $649, a $294 spread on the same certified stone. MOH London lists it at $649. 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

0.30
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6241481781
Dimensions4.36 × 4.34 × 2.62 mm
L/W Ratio1.00
Top View
4.36 mm4.34 mm0.30 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6241481781
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $649 USD|Low: $337 USD|High: $676 USD|Avg: $493 USD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 3$355 USD
Retailer 2$458 USD
Retailer 4$490 USD
MOH London$649 USD

40 data points across 4 retailers

3 retailers$355 USD to $649 USD

B+
Cheapest Retailer
-
$355 USD
£280 GBP
B
Retailer 2
-
$458 USD
€436 EUR
View
Most Expensive
B
MOH London
84F4BE75A · Oct 26
$649 USD
£511 GBP
View
2 more retailers have this diamond
Prices start from $355 USDSave up to $294 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.

B+
0.30ct Round
$355 USD