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Marquise|Lab Grown

0.30ct G SI1 Marquise Lab Grown Diamond

GD • G/SI1 • TA50D-312-1230

Diamond specifications and retailer prices

From $208 AUD
$146 USD
As of November 2, 2026
Save $619 AUD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $827 AUD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.3ct lab-grown marquise diamond

This 0.3ct lab-grown marquise sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade. Listed at 4 retailers as of October 31, 2026, with prices from $208 to $827, a $619 spread on the same certified stone. NZ Jewellers lists it at $827. 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
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateTA50D-312-1230
Dimensions7.16 × 3.41 × 2.01 mm
L/W Ratio2.10
Top View
7.16 mm3.41 mm0.30 ctG / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateTA50D-312-1230
Side View
Table 65.9%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: Nov 2
Current: $827 AUD|Low: $199 AUD|High: $827 AUD|Avg: $361 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2$208 AUD
Retailer 4$241 AUD
Retailer 3$258 AUD
NZ Jewellers$827 AUD

6 data points across 4 retailers

4 retailers$208 AUD to $827 AUD

B+
Cheapest Retailer
-
$208 AUD
$146 USD
B
Retailer 2
-
$241 AUD
$169 USD
View
B
Retailer 3
-
$258 AUD
$181 USD
View
Most Expensive
D
NZ Jewellers
35e7304b-03ba-4094-93b1-4f213f85f7b1 · Oct 31
$827 AUD
$581 USD
View
3 more retailers have this diamond
Prices start from $208 AUDSave up to $619 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 Marquise
$208 AUD