Marquise|Lab Grown|UNKNOWN

0.81ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • UNKNOWN 228118598

Certificate UNKNOWN 228118598

Diamond specifications and retailer prices

From £69 GBP
$92 USD
As of October 30, 2026
Save £207 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £276 GBP at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 0.81ct lab-grown marquise diamond

This 0.81ct lab-grown marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by UNKNOWN 228118598. Listed at 4 retailers as of October 28, 2026, with prices from £69 to £276, a £207 spread on the same certified stone. NZ Jewellers lists it at £276. 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

0.81
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 228118598
Dimensions10.24 × 4.96 × 2.93 mm
L/W Ratio2.06
Top View
10.24 mm4.96 mm0.81 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 228118598
Side View
Table 64.5%CrownGirdlePavilionCuletDepth 59.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £276 GBP|Low: £69 GBP|High: £302 GBP|Avg: £141 GBP|-8.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2£69 GBP
Retailer 3£80 GBP
Retailer 4£120 GBP
NZ Jewellers£276 GBP

7 data points across 4 retailers

4 retailers£69 GBP to £276 GBP

A
Cheapest Retailer
-
£69 GBP
$92 USD
B+
Retailer 2
-
£80 GBP
$107 USD
View
B
Retailer 3
-
£120 GBP
$160 USD
View
Most Expensive
B
NZ Jewellers
919de44c-e6c2-43fd-85d5-e3fd7df19b12 · Oct 28
£276 GBP
$367 USD
View
3 more retailers have this diamond
Prices start from £69 GBPSave up to £207 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.

A
0.81ct Marquise
£69 GBP