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Round|Lab Grown|IGI

1.80ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG459132297

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459132297

Diamond specifications and retailer prices

From $2,568 AUD
$1,800 USD
As of November 2, 2026
Save $1,491 AUD (37%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,967 AUD at Loose Grown Diamond · As of November 1, 2026
View at Loose Grown Diamond

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG459132297 or 459132297. Listed at 12 retailers as of November 2, 2026, with a 58% 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

1.80
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459132297
Dimensions7.86 × 7.88 × 4.72 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.86 mm7.88 mm1.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG459132297
Side View
Table 58.5%Crown 33.2°Girdle: MediumPavilion 40.3°Culet: NoneDepth 60.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $5,967 AUD|Low: $2,568 AUD|High: $10,514 AUD|Avg: $5,035 AUD|+0.6%
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$2,568 AUD
Retailer 5$3,296 AUD
Retailer 8$3,691 AUD
Retailer 7$3,824 AUD
Retailer 9$4,060 AUD
Retailer 2$5,244 AUD
Retailer 4$5,860 AUD
Loose Grown Diamond$5,967 AUD
Retailer 3$10,375 AUD

41 data points across 9 retailers

12 retailers$2,568 AUD to $4,060 AUD

B
Cheapest Retailer
-
$2,568 AUD
$1,800 USD
B
Retailer 2
-
$3,296 AUD
$2,310 USD
View
B
Retailer 3
-
$3,586 AUD
$2,513 USD
View
B
Retailer 4
-
$3,691 AUD
$2,587 USD
View
Final sale: no returns
B
Retailer 5
-
$3,824 AUD
$2,680 USD
View
Retailer 6
-
$3,824 AUD
$2,680 USD
View
Price last confirmed 22 days ago
B
Retailer 7
-
$4,060 AUD
$2,845 USD
View
Retailer 8
-
$5,244 AUD
£2,894 GBP
View
Price under review
Retailer 9
-
$5,257 AUD
$3,684 USD
View
Price under review
Retailer 10
-
$5,860 AUD
$4,107 USD
View
Price under review
Most Expensive
Loose Grown Diamond
459132297 · Nov 1
$5,967 AUD
$4,182 USD
View
Price under review
10 more retailers have this diamond
Prices start from $2,568 AUDSave up to $1,491 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.

B
1.80ct Round
$2,568 AUD