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Marquise|Lab Grown|GCAL

0.34ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • GCAL 311830032

Shape and cutting style on the report: Marquise brilliant

Certificate GCAL 311830032

Diamond specifications and retailer prices

From £71 GBP
$95 USD
As of November 1, 2026
Save £543 GBP (88%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £614 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.34ct lab-grown marquise diamond

This 0.34ct lab-grown marquise sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 311830032. Listed at 10 retailers as of November 1, 2026, with prices from £71 to £614, a £543 spread on the same certified stone. MOH London lists it at £614. 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

0.34
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 311830032
Dimensions6.73 × 3.73 × 2.32 mm
L/W Ratio1.80
Culet sizeNone
Top View
6.73 mm3.73 mm0.34 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 311830032
Side View
Table 61.0%Crown 34°Girdle: MED-THKPavilion 41.6°Culet: NoneDepth 62.2%

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 1
Current: £614 GBP|Low: £71 GBP|High: £638 GBP|Avg: £279 GBP|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2£71 GBP
Retailer 4£81 GBP
Retailer 10£96 GBP
Retailer 3£141 GBP
Retailer 11£158 GBP
Retailer 7£239 GBP
Retailer 8£239 GBP
Retailer 5£269 GBP
Retailer 6£373 GBP
Retailer 9£401 GBP
MOH London£614 GBP

19 data points across 11 retailers

10 retailers£71 GBP to £614 GBP

Cheapest Retailer
-
£71 GBP
$95 USD
A
Retailer 2
-
£81 GBP
$108 USD
View
A
Retailer 3
-
£96 GBP
$128 USD
View
B+
Retailer 4
-
£158 GBP
CA$294 CAD
View
B+
Retailer 5
-
£239 GBP
$320 USD
View
B+
Retailer 6
-
£239 GBP
$320 USD
View
B
Retailer 7
-
£269 GBP
$360 USD
View
B
Retailer 8
-
£373 GBP
$500 USD
View
B
Retailer 9
-
£401 GBP
$537 USD
View
Most Expensive
B
MOH London
311830032 · Nov 1
£614 GBP
View
9 more retailers have this diamond
Prices start from £71 GBPSave up to £543 GBP

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
0.34ct Marquise
£71 GBP