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Round|Lab Grown|IGI

1.65ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG602381243

Shape and cutting style on the report: Round brilliant

Certificate IGI LG602381243

Diamond specifications and retailer prices

From £154 GBP
$207 USD
As of November 1, 2026
Save £614 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £769 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.65ct lab-grown round diamond

This 1.65ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG602381243 or 602381243. Listed at 17 retailers as of November 1, 2026, with prices from £154 to £769, a £614 spread on the same certified stone. MOH London lists it at £769. 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

1.65
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602381243
Dimensions7.63 × 7.60 × 4.61 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
7.63 mm7.60 mm1.65 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602381243
Side View
Table 59.0%Crown 35.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £769 GBP|Low: £149 GBP|High: £778 GBP|Avg: £365 GBP|-0.1%
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
November 1, 2026
Retailer 10£154 GBP
Retailer 5£173 GBP
Retailer 3£179 GBP
Retailer 11£192 GBP
Retailer 12£261 GBP
Retailer 7£322 GBP
Retailer 2£342 GBP
Retailer 6£353 GBP
Retailer 13£387 GBP
Retailer 4£616 GBP
Retailer 8£619 GBP
Retailer 9£625 GBP
MOH London£769 GBP

44 data points across 13 retailers

17 retailers£154 GBP to £769 GBP

A
Cheapest Retailer
-
£154 GBP
$207 USD
A
Retailer 2
-
£173 GBP
$232 USD
View
Final sale: no returns
A
Retailer 3
-
£179 GBP
$240 USD
View
Retailer 4
-
£192 GBP
$257 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£192 GBP
$257 USD
View
A
Retailer 6
-
£220 GBP
HK$2,300 HKD
View
B+
Retailer 7
-
£261 GBP
$350 USD
View
A
Retailer 8
-
£322 GBP
€411 EUR
View
A
Retailer 9
-
£342 GBP
View
A
Retailer 10
-
£353 GBP
View
A
Retailer 11
-
£387 GBP
$518 USD
View
B+
Retailer 12
-
£396 GBP
$530 USD
View
Retailer 13
-
£575 GBP
$770 USD
View
Price last confirmed 53 days ago
B
Retailer 14
-
£616 GBP
$826 USD
View
B
Retailer 15
-
£619 GBP
$829 USD
View
B
Retailer 16
-
£625 GBP
SGD 1,131 SGD
View
Most Expensive
B
MOH London
LG602381243 · Nov 1
£769 GBP
View
16 more retailers have this diamond
Prices start from £154 GBPSave up to £614 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
1.65ct Round
£154 GBP