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Oval|Lab Grown|IGI

1.80ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG497155977

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497155977

Diamond specifications and retailer prices

From $1,708 AUD
$1,200 USD
As of October 30, 2026
Save $3,425 AUD (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,720 AUD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1.8ct lab-grown oval diamond

This 1.8ct lab-grown oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497155977 or 497155977. Listed at 13 retailers as of October 30, 2026, with a 201% 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497155977
Dimensions9.67 × 6.83 × 4.25 mm
L/W Ratio1.42
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
9.67 mm6.83 mm1.80 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497155977
Side View
Table 58.5%Crown 33.7°Girdle: MED-VTKPavilion 41.6°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,720 AUD|Low: $1,708 AUD|High: $8,834 AUD|Avg: $4,020 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 6$1,708 AUD
Retailer 10$2,631 AUD
Retailer 13$2,863 AUD
Retailer 3$2,945 AUD
Retailer 4$3,052 AUD
Retailer 11$3,052 AUD
Retailer 5$3,289 AUD
Retailer 2$4,161 AUD
Retailer 7$4,189 AUD
Retailer 12$4,786 AUD
Retailer 9$5,134 AUD
NZ Jewellers$5,720 AUD
Retailer 8$8,763 AUD

42 data points across 13 retailers

13 retailers$1,708 AUD to $5,134 AUD

B+
Cheapest Retailer
-
$1,708 AUD
$1,200 USD
B
Retailer 2
-
$2,631 AUD
$1,848 USD
View
B
Retailer 3
-
$2,863 AUD
$2,011 USD
View
B
Retailer 4
-
$2,945 AUD
$2,069 USD
View
Final sale: no returns
B
Retailer 5
-
$3,052 AUD
$2,144 USD
View
Retailer 6
-
$3,052 AUD
$2,144 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$3,289 AUD
$2,310 USD
View
B
Retailer 8
-
$4,161 AUD
£2,302 GBP
View
B
Retailer 9
-
$4,189 AUD
£2,317 GBP
View
B
Retailer 10
-
$4,786 AUD
$3,362 USD
View
B
Retailer 11
-
$5,134 AUD
$3,606 USD
View
Most Expensive
NZ Jewellers
fbb6ffee-9e31-440c-8e9e-aa63170fdef1 · Oct 31
$5,720 AUD
$4,018 USD
View
Price under review
11 more retailers have this diamond
Prices start from $1,708 AUDSave up to $3,425 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 Oval
$1,708 AUD