CaratHunter
Plans
Round|Lab Grown|IGI

1.62ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG780656005

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780656005

Diamond specifications and retailer prices

From £178 GBP
$239 USD
As of October 29, 2026
Save £713 GBP (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £891 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.62ct lab-grown round diamond

This 1.62ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG780656005 or 780656005. Listed at 16 retailers as of October 29, 2026, with prices from £178 to £891, a £713 spread on the same certified stone. MOH London lists it at £891. 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

1.62
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780656005
Dimensions7.57 × 7.52 × 4.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.57 mm7.52 mm1.62 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780656005
Side View
Table 58.0%Crown 33.9°Girdle: THN-STKPavilion 40.7°Culet: NoneDepth 61.2%

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 29
Current: £891 GBP|Low: £171 GBP|High: £913 GBP|Avg: £420 GBP|-2.4%
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
October 31, 2026
Retailer 13£178 GBP
Retailer 14£200 GBP
Retailer 4£207 GBP
Retailer 7£221 GBP
Retailer 15£221 GBP
Retailer 10£346 GBP
Retailer 2£363 GBP
Retailer 5£372 GBP
Retailer 6£378 GBP
Retailer 16£412 GBP
Retailer 9£418 GBP
Retailer 12£575 GBP
Retailer 11£623 GBP
Retailer 3£711 GBP
Retailer 8£776 GBP
MOH London£891 GBP

33 data points across 16 retailers

16 retailers£178 GBP to £891 GBP

A
Cheapest Retailer
-
£178 GBP
$239 USD
A
Retailer 2
-
£200 GBP
$268 USD
View
Final sale: no returns
A
Retailer 3
-
£207 GBP
$277 USD
View
A
Retailer 4
-
£221 GBP
$296 USD
View
A
Retailer 5
-
£221 GBP
$296 USD
View
A
Retailer 6
-
£346 GBP
View
A
Retailer 7
-
£363 GBP
€463 EUR
View
A
Retailer 8
-
£372 GBP
$499 USD
View
A
Retailer 9
-
£378 GBP
$507 USD
View
A
Retailer 10
-
£412 GBP
$552 USD
View
A
Retailer 11
-
£418 GBP
View
B
Retailer 12
-
£575 GBP
$770 USD
View
B+
Retailer 13
-
£623 GBP
$835 USD
View
B
Retailer 14
-
£711 GBP
$952 USD
View
B
Retailer 15
-
£776 GBP
$1,040 USD
View
Most Expensive
B
MOH London
LG780656005 · Oct 29
£891 GBP
View
15 more retailers have this diamond
Prices start from £178 GBPSave up to £713 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
1.62ct Round
£178 GBP