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 $128 USD
As of October 30, 2026
Save $699 USD (85%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $827 USD at MOH London · As of October 29, 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 7 retailers as of October 29, 2026, with prices from $128 to $827, a $699 spread on the same certified stone. MOH London lists it at $827. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $827 USD|Low: $128 USD|High: $855 USD|Avg: $377 USD|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6$128 USD
Retailer 8$188 USD
Retailer 7$212 USD
Retailer 3$320 USD
Retailer 4$320 USD
Retailer 2$500 USD
Retailer 5$537 USD
MOH London$827 USD

17 data points across 8 retailers

7 retailers$128 USD to $827 USD

A
Cheapest Retailer
-
$128 USD
B+
Retailer 2
-
$212 USD
CA$294 CAD
View
B+
Retailer 3
-
$320 USD
View
B+
Retailer 4
-
$320 USD
View
B
Retailer 5
-
$500 USD
View
B
Retailer 6
-
$537 USD
View
Most Expensive
B
MOH London
311830032 · Oct 29
$827 USD
£651 GBP
View
6 more retailers have this diamond
Prices start from $128 USDSave up to $699 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.

A
0.34ct Marquise
$128 USD