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Round|Lab Grown|IGI

1.80ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG494172370

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494172370

Diamond specifications and retailer prices

From $1,424 AUD
$1,000 USD
As of October 30, 2026
Save $5,508 AUD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,932 AUD at MOH London · As of October 27, 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 LG494172370 or 494172370. Listed at 10 retailers as of October 27, 2026, with prices from $1,424 to $6,932, a $5,508 spread on the same certified stone. MOH London lists it at $6,932. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494172370
Dimensions7.71 × 7.74 × 4.83 mm
L/W Ratio1.00
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
7.71 mm7.74 mm1.80 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494172370
Side View
Table 57.0%Crown 35.8°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.5%

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: $6,932 AUD|Low: $1,424 AUD|High: $7,015 AUD|Avg: $3,505 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$1,424 AUD
Retailer 3$2,090 AUD
Retailer 6$2,340 AUD
Retailer 4$2,423 AUD
Retailer 7$2,423 AUD
Retailer 9$3,304 AUD
Retailer 5$3,821 AUD
Retailer 8$4,399 AUD
Retailer 10$5,425 AUD
MOH London$6,932 AUD

15 data points across 10 retailers

10 retailers$1,424 AUD to $6,932 AUD

A
Cheapest Retailer
-
$1,424 AUD
$1,000 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 17 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
LG494172370 · Oct 27
$6,932 AUD
£3,834 GBP
View
9 more retailers have this diamond
Prices start from $1,424 AUDSave up to $5,508 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
$1,424 AUD