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Round|Lab Grown|IGI

1.18ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG440013467

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440013467

Diamond specifications and retailer prices

From $670 USD
As of November 5, 2026
Save $3,633 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,303 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.18ct lab-grown round diamond

This 1.18ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440013467 or 440013467. Listed at 12 retailers as of November 5, 2026, with prices from $670 to $4,303, a $3,633 spread on the same certified stone. MOH London lists it at $4,303. 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

1.18
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440013467
Dimensions6.89 × 6.93 × 4.08 mm
L/W Ratio1.01
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
6.89 mm6.93 mm1.18 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440013467
Side View
Table 57.0%Crown 31.8°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 59.1%

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: Nov 5
Current: $4,303 USD|Low: $670 USD|High: $4,366 USD|Avg: $2,022 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 5$670 USD
Retailer 6$1,097 USD
Retailer 10$1,228 USD
Retailer 7$1,272 USD
Retailer 9$1,272 USD
Retailer 11$1,445 USD
Retailer 12$1,811 USD
Retailer 8$2,024 USD
Retailer 2$2,164 USD
Retailer 3$2,581 USD
Retailer 4$3,642 USD
MOH London$4,303 USD

23 data points across 12 retailers

12 retailers$670 USD to $4,303 USD

A
Cheapest Retailer
-
$670 USD
B+
Retailer 2
-
$1,097 USD
View
B+
Retailer 3
-
$1,193 USD
View
B+
Retailer 4
-
$1,228 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,272 USD
View
Retailer 6
-
$1,272 USD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$1,445 USD
View
B
Retailer 8
-
$2,024 USD
View
B
Retailer 9
-
$2,164 USD
View
B
Retailer 10
-
$2,385 USD
View
B
Retailer 11
-
$2,581 USD
View
Most Expensive
B
MOH London
LG440013467 · Nov 5
$4,303 USD
£3,388 GBP
View
11 more retailers have this diamond
Prices start from $670 USDSave up to $3,633 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
1.18ct Round
$670 USD