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Round|Lab Grown|IGI

1.65ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG445036480

Shape and cutting style on the report: Round brilliant

Certificate IGI LG445036480

Diamond specifications and retailer prices

From $930 USD
As of October 30, 2026
Save $3,845 USD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,775 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445036480 or 445036480. Listed at 11 retailers as of October 29, 2026, with prices from $930 to $4,775, a $3,845 spread on the same certified stone. MOH London lists it at $4,775. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445036480
Dimensions7.75 × 7.73 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.75 mm7.73 mm1.65 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445036480
Side View
Table 60.0%Crown 31.5°Girdle: MediumPavilion 40.4°Culet: NoneDepth 58.4%

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 30
Current: $4,775 USD|Low: $930 USD|High: $4,807 USD|Avg: $2,223 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$930 USD
Retailer 5$1,274 USD
Retailer 8$1,427 USD
Retailer 6$1,478 USD
Retailer 9$1,478 USD
Retailer 10$1,650 USD
Retailer 4$1,727 USD
Retailer 12$2,049 USD
Retailer 7$2,339 USD
Retailer 11$2,755 USD
Retailer 3$4,230 USD
MOH London$4,775 USD

14 data points across 12 retailers

11 retailers$930 USD to $4,775 USD

A
Cheapest Retailer
-
$930 USD
B+
Retailer 2
-
$1,274 USD
View
B+
Retailer 3
-
$1,387 USD
View
B+
Retailer 4
-
$1,427 USD
View
Final sale: no returns
Retailer 5
-
$1,478 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$1,478 USD
View
B+
Retailer 7
-
$1,650 USD
View
B
Retailer 8
-
$2,339 USD
View
B
Retailer 9
-
$2,755 USD
View
B
Retailer 10
-
$2,771 USD
View
Most Expensive
B
MOH London
LG445036480 · Oct 29
$4,775 USD
£3,760 GBP
View
10 more retailers have this diamond
Prices start from $930 USDSave up to $3,845 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
$930 USD