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Marquise|Lab Grown|UNKNOWN

0.31ct G VS2 Marquise Lab Grown Diamond

ID • G/VS2 • UNKNOWN 612314135

Certificate UNKNOWN 612314135

Diamond specifications and retailer prices

From £125 GBP
$168 USD
As of November 2, 2026
Save £375 GBP (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £501 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.31ct lab-grown marquise diamond

This 0.31ct lab-grown marquise sits in the sub-half-carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by UNKNOWN 612314135. Listed at 5 retailers as of October 31, 2026, with prices from £125 to £501, a £375 spread on the same certified stone. NZ Jewellers lists it at £501. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.31
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 612314135
Dimensions7.04 × 3.66 × 2.08 mm
L/W Ratio1.92
Top View
7.04 mm3.66 mm0.31 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 612314135
Side View
Table 61.6%CrownGirdlePavilionCuletDepth 57.0%

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: £501 GBP|Low: £121 GBP|High: £501 GBP|Avg: £232 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 8, 2026
Retailer 2£125 GBP
Retailer 5£146 GBP
Retailer 3£156 GBP
Retailer 4£280 GBP
NZ Jewellers£501 GBP

6 data points across 5 retailers

5 retailers£125 GBP to £501 GBP

B+
Cheapest Retailer
-
£125 GBP
$168 USD
B+
Retailer 2
-
£146 GBP
$195 USD
View
B+
Retailer 3
-
£156 GBP
$209 USD
View
B
Retailer 4
-
£280 GBP
$375 USD
View
Most Expensive
C
NZ Jewellers
3e5170ff-6af6-4b56-8745-ac957e909c7f · Oct 31
£501 GBP
$671 USD
View
4 more retailers have this diamond
Prices start from £125 GBPSave up to £375 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.

B+
0.31ct Marquise
£125 GBP