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Round|Lab Grown|IGI

1.80ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG476186438

Shape and cutting style on the report: Round brilliant

Certificate IGI LG476186438

Diamond specifications and retailer prices

From $1,851 AUD
$1,300 USD
As of October 29, 2026
Save $5,108 AUD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,959 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG476186438 or 476186438. Listed at 10 retailers as of October 29, 2026, with prices from $1,851 to $6,959, a $5,108 spread on the same certified stone. MOH London lists it at $6,959. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.4°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476186438
Dimensions7.85 × 7.92 × 4.73 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
7.85 mm7.92 mm1.80 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG476186438
Side View
Table 62.0%Crown 32.4°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 59.9%

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: $6,959 AUD|Low: $1,564 AUD|High: $7,015 AUD|Avg: $3,317 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 11$1,564 AUD
Retailer 4$1,851 AUD
Retailer 2$2,090 AUD
Retailer 7$2,340 AUD
Retailer 5$2,423 AUD
Retailer 8$2,423 AUD
Retailer 10$3,304 AUD
Retailer 6$3,821 AUD
Retailer 9$4,399 AUD
Retailer 3$5,425 AUD
MOH London$6,959 AUD

14 data points across 11 retailers

10 retailers$1,851 AUD to $6,959 AUD

A
Cheapest Retailer
-
$1,851 AUD
$1,300 USD
B+
Retailer 2
-
$2,090 AUD
$1,468 USD
View
B+
Retailer 3
-
$2,273 AUD
$1,597 USD
View
B+
Retailer 4
-
$2,340 AUD
$1,644 USD
View
Final sale: no returns
Retailer 5
-
$2,423 AUD
$1,702 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$2,423 AUD
$1,702 USD
View
B
Retailer 7
-
$3,821 AUD
$2,684 USD
View
B
Retailer 8
-
$4,399 AUD
$3,090 USD
View
B
Retailer 9
-
$4,543 AUD
$3,191 USD
View
Most Expensive
B
MOH London
LG476186438 · Oct 29
$6,959 AUD
£3,849 GBP
View
9 more retailers have this diamond
Prices start from $1,851 AUDSave up to $5,108 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
$1,851 AUD