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Marquise|Lab Grown

0.51ct H VS2 Marquise Lab Grown Diamond

VG • H/VS2 • TA50D-71-680

Diamond specifications and retailer prices

From £238 GBP
As of November 4, 2026
Save £709 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £947 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade. Listed at 4 retailers as of November 4, 2026, with prices from £238 to £947, a £709 spread on the same certified stone. NZ Jewellers lists it at £947. 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

0.51
Carat
H
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateTA50D-71-680
Dimensions8.90 × 4.17 × 2.39 mm
L/W Ratio2.13
Top View
8.90 mm4.17 mm0.51 ctH / VS2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateTA50D-71-680
Side View
Table 62.2%CrownGirdlePavilionCuletDepth 57.4%

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 4
Current: £947 GBP|Low: £228 GBP|High: £947 GBP|Avg: £413 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2£238 GBP
Retailer 4£276 GBP
Retailer 3£295 GBP
NZ Jewellers£947 GBP

6 data points across 4 retailers

4 retailers£238 GBP to £947 GBP

B+
Cheapest Retailer
-
£238 GBP
B
Retailer 2
-
£276 GBP
View
B
Retailer 3
-
£295 GBP
View
Most Expensive
C
NZ Jewellers
d5a3bde4-d13d-4d89-8c0f-155fed7c7aa1 · Nov 4
£947 GBP
$1,278 USD
View
3 more retailers have this diamond
Prices start from £238 GBPSave up to £709 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+
0.51ct Marquise
£238 GBP