Marquise|Lab Grown

0.30ct H SI1 Marquise Lab Grown Diamond

FR • H/SI1 • TA50D-190-564

Diamond specifications and retailer prices

From $137 USD
As of November 2, 2026
Save $408 USD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $545 USD 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 H 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 $137 to $545, a $408 spread on the same certified stone. NZ Jewellers lists it at $545. 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
Color
SI1
Clarity
Fair
Cut

Specifications

CutFair
PolishExcellent
SymmetryGood
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateTA50D-190-564
Dimensions7.01 × 3.63 × 2.00 mm
L/W Ratio1.93
Top View
7.01 mm3.63 mm0.30 ctH / SI1
OriginLab Grown
CutFair
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateTA50D-190-564
Side View
Table 62.1%CrownGirdlePavilionCuletDepth 55.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $545 USD|Low: $131 USD|High: $545 USD|Avg: $238 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2$137 USD
Retailer 4$159 USD
Retailer 3$170 USD
NZ Jewellers$545 USD

6 data points across 4 retailers

4 retailers$137 USD to $545 USD

B
Cheapest Retailer
-
$137 USD
B
Retailer 2
-
$159 USD
View
B
Retailer 3
-
$170 USD
View
Most Expensive
D
NZ Jewellers
2a124bca-fd48-4557-a1c0-c0ac28b3ea77 · Oct 31
$545 USD
View
3 more retailers have this diamond
Prices start from $137 USDSave up to $408 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 Marquise
$137 USD