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Round|Lab Grown|IGI

1.83ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG436074660

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436074660

Diamond specifications and retailer prices

From $1,273 USD
As of October 29, 2026
Save $1,494 USD (54%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,768 USD at MOH London · As of October 21, 2026
View at MOH London

About this 1.83ct lab-grown round diamond

This 1.83ct 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 LG436074660 or 436074660. Listed at 10 retailers as of October 27, 2026, with a 117% 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

1.83
Carat
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074660
Dimensions7.84 × 7.90 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.84 mm7.90 mm1.83 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436074660
Side View
Table 58.0%Crown 31.7°GirdlePavilion 40.9°Culet: NoneDepth 60.7%

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: $4,768 USD|Low: $1,300 USD|High: $4,799 USD|Avg: $2,499 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 18, 2026
Retailer 2$1,300 USD
Retailer 4$1,425 USD
Retailer 6$2,053 USD
Retailer 3$2,337 USD
Retailer 5$2,751 USD
Retailer 7$3,301 USD
MOH London$4,768 USD

9 data points across 7 retailers

10 retailers$1,273 USD to $2,767 USD

A
Cheapest Retailer
-
$1,273 USD
A
Retailer 2
-
$1,300 USD
View
B+
Retailer 3
-
$1,385 USD
View
B+
Retailer 4
-
$1,425 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,476 USD
View
Retailer 6
-
$1,476 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,337 USD
View
B
Retailer 8
-
$2,751 USD
View
B
Retailer 9
-
$2,767 USD
View
Most Expensive
MOH London
LG436074660 · Oct 21
$4,768 USD
£3,754 GBP
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from $1,273 USDSave up to $1,494 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
1.83ct Round
$1,273 USD