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Marquise|Lab Grown

0.43ct H SI1 Marquise Lab Grown Diamond

EX • H/SI1 • TA50D-87-1235

Diamond specifications and retailer prices

From £157 GBP
$210 USD
As of November 2, 2026
Save £467 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £624 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.43ct lab-grown marquise diamond

This 0.43ct lab-grown marquise sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade. Listed at 4 retailers as of October 31, 2026, with prices from £157 to £624, a £467 spread on the same certified stone. NZ Jewellers lists it at £624. 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

0.43
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateTA50D-87-1235
Dimensions7.61 × 3.86 × 2.45 mm
L/W Ratio1.97
Top View
7.61 mm3.86 mm0.43 ctH / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateTA50D-87-1235
Side View
Table 57.1%CrownGirdlePavilionCuletDepth 63.3%

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: £624 GBP|Low: £150 GBP|High: £624 GBP|Avg: £272 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2£157 GBP
Retailer 4£181 GBP
Retailer 3£194 GBP
NZ Jewellers£624 GBP

6 data points across 4 retailers

4 retailers£157 GBP to £624 GBP

B+
Cheapest Retailer
-
£157 GBP
$210 USD
B
Retailer 2
-
£181 GBP
$243 USD
View
B
Retailer 3
-
£194 GBP
$260 USD
View
Most Expensive
C
NZ Jewellers
a81993c6-1275-4b72-894b-33f5215f26d6 · Oct 31
£624 GBP
$836 USD
View
3 more retailers have this diamond
Prices start from £157 GBPSave up to £467 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+
0.43ct Marquise
£157 GBP