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Round|Lab Grown|IGI

1.80ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG500151236

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500151236

Diamond specifications and retailer prices

From $1,438 AUD
$1,010 USD
As of October 30, 2026
Save $5,241 AUD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,679 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown round diamond

This 1.8ct 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 LG500151236 or 500151236. Listed at 10 retailers as of October 29, 2026, with prices from $1,438 to $6,679, a $5,241 spread on the same certified stone. MOH London lists it at $6,679. 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

1.80
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500151236
Dimensions7.74 × 7.66 × 4.85 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
7.74 mm7.66 mm1.80 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500151236
Side View
Table 55.0%Crown 36.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.0%

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 30
Current: $6,679 AUD|Low: $1,426 AUD|High: $6,733 AUD|Avg: $3,510 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2$1,438 AUD
Retailer 4$1,996 AUD
Retailer 6$2,881 AUD
Retailer 7$3,008 AUD
Retailer 3$3,277 AUD
Retailer 5$3,854 AUD
Retailer 8$4,624 AUD
MOH London$6,679 AUD

10 data points across 8 retailers

10 retailers$1,438 AUD to $6,679 AUD

A
Cheapest Retailer
-
$1,438 AUD
$1,010 USD
B+
Retailer 2
-
$1,782 AUD
$1,252 USD
View
B+
Retailer 3
-
$1,939 AUD
$1,362 USD
View
B+
Retailer 4
-
$1,996 AUD
$1,402 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,067 AUD
$1,452 USD
View
Retailer 6
-
$2,067 AUD
$1,452 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$3,277 AUD
$2,302 USD
View
B
Retailer 8
-
$3,854 AUD
$2,707 USD
View
B
Retailer 9
-
$3,876 AUD
$2,723 USD
View
Most Expensive
B
MOH London
LG500151236 · Oct 29
$6,679 AUD
£3,694 GBP
View
9 more retailers have this diamond
Prices start from $1,438 AUDSave up to $5,241 AUD

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
1.80ct Round
$1,438 AUD