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Marquise|Lab Grown|UNKNOWN

0.50ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • UNKNOWN 50218514

Certificate UNKNOWN 50218514

Diamond specifications and retailer prices

From €146 EUR
$164 USD
As of November 2, 2026
Save €436 EUR (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €582 EUR at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.5ct lab-grown marquise diamond

This 0.5ct lab-grown marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by UNKNOWN 50218514. Listed at 5 retailers as of October 31, 2026, with prices from €146 to €582, a €436 spread on the same certified stone. NZ Jewellers lists it at €582. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.50
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 50218514
Dimensions8.03 × 4.23 × 2.64 mm
L/W Ratio1.90
Top View
8.03 mm4.23 mm0.50 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 50218514
Side View
Table 59.4%CrownGirdlePavilionCuletDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €582 EUR|Low: €140 EUR|High: €582 EUR|Avg: €270 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 8, 2026
Retailer 2€146 EUR
Retailer 5€169 EUR
Retailer 3€181 EUR
Retailer 4€326 EUR
NZ Jewellers€582 EUR

6 data points across 5 retailers

5 retailers€146 EUR to €582 EUR

A
Cheapest Retailer
-
€146 EUR
$164 USD
B+
Retailer 2
-
€169 EUR
$190 USD
View
B+
Retailer 3
-
€181 EUR
$203 USD
View
B
Retailer 4
-
€326 EUR
$366 USD
View
Most Expensive
B
NZ Jewellers
d6215609-5929-4e7a-8e05-e4db627463ff · Oct 31
€582 EUR
$653 USD
View
4 more retailers have this diamond
Prices start from €146 EURSave up to €436 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.

A
0.50ct Marquise
€146 EUR