CaratHunter
Plans
Marquise|Lab Grown|IGI

0.71ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG436074394

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436074394

Diamond specifications and retailer prices

From £320 GBP
$430 USD
As of November 2, 2026
Save £1,303 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,623 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.71ct lab-grown marquise diamond

This 0.71ct lab-grown marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436074394 or 436074394. Listed at 12 retailers as of November 1, 2026, with prices from £320 to £1,623, a £1,303 spread on the same certified stone. MOH London lists it at £1,623. 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

0.71
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.4°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074394
Dimensions8.72 × 4.84 × 3.07 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
8.72 mm4.84 mm0.71 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436074394
Side View
Table 56.0%Crown 32.4°Girdle: THN-MEDPavilion 41.7°Culet: NoneDepth 63.4%

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: £1,623 GBP|Low: £320 GBP|High: £1,775 GBP|Avg: £812 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 2£320 GBP
Retailer 11£356 GBP
Retailer 3£399 GBP
Retailer 15£399 GBP
Retailer 8£427 GBP
Retailer 12£442 GBP
Retailer 16£442 GBP
Retailer 5£548 GBP
Retailer 14£690 GBP
Retailer 9£741 GBP
Retailer 6£748 GBP
Retailer 10£1,188 GBP
Retailer 13£1,420 GBP
Retailer 4£1,436 GBP
MOH London£1,623 GBP
Retailer 7£1,775 GBP

23 data points across 16 retailers

12 retailers£320 GBP to £1,623 GBP

A
Cheapest Retailer
-
£320 GBP
$430 USD
B+
Retailer 2
-
£356 GBP
$478 USD
View
B+
Retailer 3
-
£399 GBP
$535 USD
View
Final sale: no returns
B+
Retailer 4
-
£399 GBP
$536 USD
View
Retailer 5
-
£442 GBP
$593 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£442 GBP
$593 USD
View
B
Retailer 7
-
£690 GBP
$926 USD
View
Retailer 8
-
£741 GBP
€947 EUR
View
Price last confirmed 8 days ago
B
Retailer 9
-
£1,188 GBP
$1,594 USD
View
B
Retailer 10
-
£1,420 GBP
$1,906 USD
View
B
Retailer 11
-
£1,436 GBP
$1,928 USD
View
Most Expensive
B
MOH London
LG436074394 · Nov 1
£1,623 GBP
View
11 more retailers have this diamond
Prices start from £320 GBPSave up to £1,303 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
0.71ct Marquise
£320 GBP