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Round|Lab Grown|IGI

1.60ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG451055508

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055508

Diamond specifications and retailer prices

From £838 GBP
$1,116 USD
As of October 29, 2026
Save £2,302 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,140 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.6ct lab-grown round diamond

This 1.6ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055508 or 451055508. Listed at 10 retailers as of October 29, 2026, with prices from £838 to £3,140, a £2,302 spread on the same certified stone. MOH London lists it at £3,140. 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

1.60
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055508
Dimensions7.42 × 7.41 × 4.64 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.42 mm7.41 mm1.60 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055508
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.5%

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: Oct 29
Current: £3,140 GBP|Low: £669 GBP|High: £3,165 GBP|Avg: £1,497 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 2£838 GBP
Retailer 3£856 GBP
Retailer 6£938 GBP
Retailer 4£972 GBP
Retailer 7£972 GBP
Retailer 9£1,393 GBP
Retailer 5£1,546 GBP
Retailer 8£1,972 GBP
Retailer 10£2,175 GBP
MOH London£3,140 GBP

16 data points across 10 retailers

10 retailers£838 GBP to £3,140 GBP

A
Cheapest Retailer
-
£838 GBP
$1,116 USD
A
Retailer 2
-
£856 GBP
$1,140 USD
View
A
Retailer 3
-
£912 GBP
$1,214 USD
View
B+
Retailer 4
-
£938 GBP
$1,249 USD
View
Final sale: no returns
Retailer 5
-
£972 GBP
$1,295 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£972 GBP
$1,295 USD
View
B
Retailer 7
-
£1,546 GBP
$2,059 USD
View
B
Retailer 8
-
£1,823 GBP
$2,427 USD
View
B
Retailer 9
-
£1,972 GBP
$2,626 USD
View
Most Expensive
B
MOH London
LG451055508 · Oct 29
£3,140 GBP
View
9 more retailers have this diamond
Prices start from £838 GBPSave up to £2,302 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
1.60ct Round
£838 GBP