Marquise|Lab Grown

0.50ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • TB44D-13-813

Diamond specifications and retailer prices

From £92 GBP
$122 USD
As of October 30, 2026
Save £275 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £366 GBP at NZ Jewellers · As of October 28, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade. Listed at 4 retailers as of October 28, 2026, with prices from £92 to £366, a £275 spread on the same certified stone. NZ Jewellers lists it at £366. 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

0.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateTB44D-13-813
Dimensions8.64 × 4.22 × 2.49 mm
L/W Ratio2.05
Top View
8.64 mm4.22 mm0.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateTB44D-13-813
Side View
Table 64.9%CrownGirdlePavilionCuletDepth 59.0%

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: Oct 30
Current: £366 GBP|Low: £89 GBP|High: £366 GBP|Avg: £162 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2£92 GBP
Retailer 4£107 GBP
Retailer 3£122 GBP
NZ Jewellers£366 GBP

6 data points across 4 retailers

4 retailers£92 GBP to £366 GBP

B+
Cheapest Retailer
-
£92 GBP
$122 USD
B+
Retailer 2
-
£107 GBP
$142 USD
View
B+
Retailer 3
-
£122 GBP
$162 USD
View
Most Expensive
C
NZ Jewellers
4028828d-0426-4246-9d9e-d609288abe12 · Oct 28
£366 GBP
$488 USD
View
3 more retailers have this diamond
Prices start from £92 GBPSave up to £275 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+
0.50ct Marquise
£92 GBP