CaratHunter
Plans
Marquise|Lab Grown|IGI

1.59ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG834613248

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG834613248

Diamond specifications and retailer prices

From £903 GBP
$1,210 USD
As of October 30, 2026
2 retailers carry this diamond
Most expensive: £903 GBP at Brilliant Earth
View at Brilliant Earth

About this 1.59ct lab-grown marquise diamond

This 1.59ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG834613248 or 834613248. Listed at 2 retailers as of October 30, 2026. 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

1.59
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG834613248
Dimensions11.70 × 6.20 × 3.91 mm
L/W Ratio1.89
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.70 mm6.20 mm1.59 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG834613248
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £903 GBP|Low: £331 GBP|High: £903 GBP|Avg: £482 GBP
Brilliant Earth
Retailer 2
Retailer 3
October 19, 2026
Retailer 3£331 GBP
Retailer 2£368 GBP
Brilliant Earth£903 GBP

21 data points across 3 retailers

2 retailers

Retailer 1
-
£368 GBP
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21268476A · Oct 30
£903 GBP
$1,210 USD
View
1 more retailer has this diamond

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
1.59ct Marquise
£903 GBP