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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 €130 EUR
$146 USD
As of November 2, 2026
Save €388 EUR (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €518 EUR 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 €130 to €518, a €388 spread on the same certified stone. NZ Jewellers lists it at €518. 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: €518 EUR|Low: €125 EUR|High: €518 EUR|Avg: €226 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2€130 EUR
Retailer 4€151 EUR
Retailer 3€161 EUR
NZ Jewellers€518 EUR

6 data points across 4 retailers

4 retailers€130 EUR to €518 EUR

B+
Cheapest Retailer
-
€130 EUR
$146 USD
B
Retailer 2
-
€151 EUR
$169 USD
View
B
Retailer 3
-
€161 EUR
$181 USD
View
Most Expensive
D
NZ Jewellers
35e7304b-03ba-4094-93b1-4f213f85f7b1 · Oct 31
€518 EUR
$581 USD
View
3 more retailers have this diamond
Prices start from €130 EURSave up to €388 EUR

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
€130 EUR