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Round|Lab Grown|UNKNOWN

0.30ct H SI1 Round Lab Grown Diamond

GD • H/SI1 • UNKNOWN 302761675

Certificate UNKNOWN 302761675

Diamond specifications and retailer prices

From $195 AUD
$137 USD
As of October 29, 2026
Save $581 AUD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $776 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a standard cut grade and certified by UNKNOWN 302761675. Listed at 5 retailers as of October 29, 2026, with prices from $195 to $776, a $581 spread on the same certified stone. NZ Jewellers lists it at $776. 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
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 302761675
Dimensions4.34 × 4.28 × 2.54 mm
L/W Ratio1.01
Top View
4.34 mm4.28 mm0.30 ctH / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 302761675
Side View
Table 61.6%CrownGirdlePavilionCuletDepth 58.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $195 AUD|Low: $186 AUD|High: $451 AUD|Avg: $283 AUD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1$195 AUD
Retailer 4$226 AUD
Retailer 2$242 AUD
Retailer 3$451 AUD

4 data points across 4 retailers

5 retailers$195 AUD to $776 AUD

B+
Cheapest Retailer
-
$195 AUD
$137 USD
B+
Retailer 2
-
$226 AUD
$159 USD
View
B+
Retailer 3
-
$242 AUD
$170 USD
View
B
Retailer 4
-
$451 AUD
$317 USD
View
Most Expensive
C
NZ Jewellers
9a71a226-c614-4baa-8f97-d0ca4c7e38e9 · Oct 30
$776 AUD
$545 USD
View
4 more retailers have this diamond
Prices start from $195 AUDSave up to $581 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.

B+
0.30ct Round
$195 AUD