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Round|Lab Grown|IGI

1.58ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG480168615

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480168615

Diamond specifications and retailer prices

From £649 GBP
$870 USD
As of October 30, 2026
Save £2,963 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,612 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.58ct lab-grown round diamond

This 1.58ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG480168615 or 480168615. Listed at 10 retailers as of October 29, 2026, with prices from £649 to £3,612, a £2,963 spread on the same certified stone. MOH London lists it at £3,612. 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

1.58
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480168615
Dimensions7.58 × 7.56 × 4.48 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.58 mm7.56 mm1.58 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG480168615
Side View
Table 59.0%Crown 32.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.2%

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: Oct 30
Current: £3,612 GBP|Low: £649 GBP|High: £3,641 GBP|Avg: £1,582 GBP|-0.5%
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
October 30, 2026
Retailer 2£649 GBP
Retailer 6£964 GBP
Retailer 10£1,049 GBP
Retailer 9£1,080 GBP
Retailer 7£1,118 GBP
Retailer 12£1,118 GBP
Retailer 4£1,298 GBP
Retailer 3£1,545 GBP
Retailer 8£1,770 GBP
Retailer 13£2,084 GBP
Retailer 11£2,096 GBP
Retailer 5£2,503 GBP
MOH London£3,612 GBP

17 data points across 13 retailers

10 retailers£649 GBP to £3,612 GBP

A
Cheapest Retailer
-
£649 GBP
$870 USD
B+
Retailer 2
-
£964 GBP
$1,292 USD
View
B+
Retailer 3
-
£1,049 GBP
$1,405 USD
View
B+
Retailer 4
-
£1,080 GBP
$1,447 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,118 GBP
$1,498 USD
View
Retailer 6
-
£1,118 GBP
$1,498 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£1,770 GBP
$2,371 USD
View
B
Retailer 8
-
£2,084 GBP
$2,793 USD
View
B
Retailer 9
-
£2,096 GBP
$2,808 USD
View
Most Expensive
B
MOH London
LG480168615 · Oct 29
£3,612 GBP
View
9 more retailers have this diamond
Prices start from £649 GBPSave up to £2,963 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
1.58ct Round
£649 GBP