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Round|Lab Grown|IGI

1.65ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG499105227

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499105227

Diamond specifications and retailer prices

From $1,150 USD
As of October 29, 2026
Save $3,159 USD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,309 USD at MOH London · As of October 29, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499105227 or 499105227. Listed at 10 retailers as of October 29, 2026, with prices from $1,150 to $4,309, a $3,159 spread on the same certified stone. MOH London lists it at $4,309. 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
J
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499105227
Dimensions7.56 × 7.53 × 4.68 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
7.56 mm7.53 mm1.65 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499105227
Side View
Table 55.5%Crown 35.7°Girdle: MediumPavilion 40.2°Culet: NoneDepth 62.1%

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: Oct 29
Current: $4,309 USD|Low: $1,170 USD|High: $4,343 USD|Avg: $2,198 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2$1,170 USD
Retailer 4$1,288 USD
Retailer 7$1,463 USD
Retailer 6$1,905 USD
Retailer 3$2,119 USD
Retailer 5$2,629 USD
Retailer 8$2,984 USD
MOH London$4,309 USD

13 data points across 8 retailers

10 retailers$1,150 USD to $4,309 USD

A
Cheapest Retailer
-
$1,150 USD
A
Retailer 2
-
$1,170 USD
View
A
Retailer 3
-
$1,251 USD
View
A
Retailer 4
-
$1,288 USD
View
Final sale: no returns
Retailer 5
-
$1,334 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,334 USD
View
B
Retailer 7
-
$2,119 USD
View
B
Retailer 8
-
$2,501 USD
View
B
Retailer 9
-
$2,629 USD
View
Most Expensive
B
MOH London
LG499105227 · Oct 29
$4,309 USD
£3,393 GBP
View
9 more retailers have this diamond
Prices start from $1,150 USDSave up to $3,159 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
$1,150 USD