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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 $187 SGD
$146 USD
As of November 2, 2026
Save $556 SGD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $743 SGD 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 $187 to $743, a $556 spread on the same certified stone. NZ Jewellers lists it at $743. 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: $743 SGD|Low: $179 SGD|High: $743 SGD|Avg: $324 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2$187 SGD
Retailer 4$216 SGD
Retailer 3$231 SGD
NZ Jewellers$743 SGD

6 data points across 4 retailers

4 retailers$187 SGD to $743 SGD

B+
Cheapest Retailer
-
$187 SGD
$146 USD
B
Retailer 2
-
$216 SGD
$169 USD
View
B
Retailer 3
-
$231 SGD
$181 USD
View
Most Expensive
D
NZ Jewellers
35e7304b-03ba-4094-93b1-4f213f85f7b1 · Oct 31
$743 SGD
$581 USD
View
3 more retailers have this diamond
Prices start from $187 SGDSave up to $556 SGD

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
$187 SGD