CaratHunter
Plans
Round|Lab Grown|IGI

1.64ct H SI2 Round Lab Grown Diamond

ID • H/SI2 • IGI LG488155747

Shape and cutting style on the report: Round brilliant

Certificate IGI LG488155747

Diamond specifications and retailer prices

From £909 GBP
$1,210 USD
As of October 29, 2026
Save £1,440 GBP (61%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,598 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.64ct lab-grown round diamond

This 1.64ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488155747 or 488155747. Listed at 10 retailers as of October 27, 2026, with a 159% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.64
Carat
H
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488155747
Dimensions7.63 × 7.59 × 4.63 mm
L/W Ratio1.01
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
7.63 mm7.59 mm1.64 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488155747
Side View
Table 59.5%Crown 33.1°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 60.8%

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: Oct 29
Current: £3,598 GBP|Low: £863 GBP|High: £3,627 GBP|Avg: £1,789 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
October 18, 2026
Retailer 4£909 GBP
Retailer 2£1,081 GBP
Retailer 7£1,209 GBP
Retailer 5£1,253 GBP
Retailer 8£1,253 GBP
Retailer 11£1,420 GBP
Retailer 10£1,708 GBP
Retailer 6£1,977 GBP
Retailer 9£2,275 GBP
Retailer 3£2,806 GBP
MOH London£3,598 GBP

14 data points across 11 retailers

10 retailers£909 GBP to £2,349 GBP

A
Cheapest Retailer
-
£909 GBP
$1,210 USD
A
Retailer 2
-
£1,081 GBP
$1,439 USD
View
B+
Retailer 3
-
£1,175 GBP
$1,565 USD
View
B+
Retailer 4
-
£1,209 GBP
$1,610 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,253 GBP
$1,669 USD
View
Retailer 6
-
£1,253 GBP
$1,669 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£1,977 GBP
$2,633 USD
View
B
Retailer 8
-
£2,275 GBP
$3,029 USD
View
B
Retailer 9
-
£2,349 GBP
$3,128 USD
View
Most Expensive
MOH London
LG488155747 · Oct 21
£3,598 GBP
View
Price last confirmed 9 days ago
9 more retailers have this diamond
Prices start from £909 GBPSave up to £1,440 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
1.64ct Round
£909 GBP