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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 $207 USD
As of November 1, 2026
Save $823 USD (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,030 USD 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 $207 to $1,030, a $823 spread on the same certified stone. MOH London lists it at $1,030. 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
Color
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

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,030 USD|Low: $199 USD|High: $1,043 USD|Avg: $489 USD|-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$207 USD
Retailer 5$232 USD
Retailer 3$240 USD
Retailer 11$257 USD
Retailer 12$350 USD
Retailer 7$432 USD
Retailer 2$458 USD
Retailer 6$472 USD
Retailer 13$518 USD
Retailer 4$826 USD
Retailer 8$829 USD
Retailer 9$837 USD
MOH London$1,030 USD

44 data points across 13 retailers

17 retailers$207 USD to $1,030 USD

A
Cheapest Retailer
-
$207 USD
A
Retailer 2
-
$232 USD
View
Final sale: no returns
A
Retailer 3
-
$240 USD
View
Retailer 4
-
$257 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$257 USD
View
A
Retailer 6
-
$294 USD
HK$2,300 HKD
View
B+
Retailer 7
-
$350 USD
View
A
Retailer 8
-
$432 USD
€411 EUR
View
A
Retailer 9
-
$458 USD
£360 GBP
View
A
Retailer 10
-
$472 USD
£372 GBP
View
A
Retailer 11
-
$518 USD
View
B+
Retailer 12
-
$530 USD
View
Retailer 13
-
$770 USD
View
Price last confirmed 53 days ago
B
Retailer 14
-
$826 USD
View
B
Retailer 15
-
$829 USD
View
B
Retailer 16
-
$837 USD
SGD 1,131 SGD
View
Most Expensive
B
MOH London
LG602381243 · Nov 1
$1,030 USD
£811 GBP
View
16 more retailers have this diamond
Prices start from $207 USDSave up to $823 USD

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
$207 USD