CaratHunter
Plans
Round|Lab Grown|IGI

1.59ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG844648741

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844648741

Diamond specifications and retailer prices

From £165 GBP
$222 USD
As of November 3, 2026
Save £520 GBP (76%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £686 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.59ct lab-grown round diamond

This 1.59ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844648741 or 844648741. Listed at 3 retailers as of November 2, 2026, with prices from £165 to £686, a £520 spread on the same certified stone. Brilliant Earth lists it at £686. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844648741
Dimensions7.40 × 7.43 × 4.66 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm7.43 mm1.59 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844648741
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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 3
Current: £348 GBP|Low: £165 GBP|High: £375 GBP|Avg: £272 GBP|-7.2%
Retailer 1
Retailer 2
November 3, 2026
Retailer 2£165 GBP
Retailer 1£348 GBP

18 data points across 2 retailers

3 retailers£165 GBP to £686 GBP

A
Cheapest Retailer
-
£165 GBP
$222 USD
Final sale: no returns
A
Retailer 2
-
£348 GBP
View
Most Expensive
B
Brilliant Earth
22002939A · Nov 2
£686 GBP
$920 USD
View
2 more retailers have this diamond
Prices start from £165 GBPSave up to £520 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
1.59ct Round
£165 GBP