CaratHunter
Plans
Marquise|Lab Grown|IGI

1.01ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG851619581

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851619581

Diamond specifications and retailer prices

From £143 GBP
HK$1,500 HKD
As of November 2, 2026
Save £897 GBP (86%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,040 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.01ct lab-grown marquise diamond

This 1.01ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG851619581 or 851619581. Listed at 5 retailers as of November 2, 2026, with prices from £143 to £1,040, a £897 spread on the same certified stone. MOH London lists it at £1,040. 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

1.01
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851619581
Dimensions10.53 × 5.26 × 3.18 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.53 mm5.26 mm1.01 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG851619581
Side View
Table 63.0%Crown 34.7°Girdle: MED-STKPavilion 39.3°CuletDepth 60.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,040 GBP|Low: £143 GBP|High: £1,040 GBP|Avg: £360 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 3£143 GBP
Retailer 4£170 GBP
Retailer 2£209 GBP
Retailer 5£237 GBP
MOH London£1,040 GBP

2 data points across 5 retailers

5 retailers£143 GBP to £1,040 GBP

A
Cheapest Retailer
-
£143 GBP
HK$1,500 HKD
B+
Retailer 2
-
£170 GBP
$228 USD
View
A
Retailer 3
-
£209 GBP
View
B+
Retailer 4
-
£237 GBP
View
Most Expensive
C
MOH London
LG851619581 · Nov 2
£1,040 GBP
View
4 more retailers have this diamond
Prices start from £143 GBPSave up to £897 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
1.01ct Marquise
£143 GBP