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Oval|Lab Grown|IGI

1.54ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG497145338

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497145338

Diamond specifications and retailer prices

From $390 AUD
$274 USD
As of November 1, 2026
Save $1,304 AUD (77%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $1,694 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.54ct lab-grown oval diamond

This 1.54ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497145338 or 497145338. Listed at 24 retailers as of October 31, 2026, with prices from $390 to $1,694, a $1,304 spread on the same certified stone. Brilliant Earth lists it at $1,694. 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

1.54
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497145338
Dimensions9.07 × 6.53 × 4.10 mm
L/W Ratio1.39
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
9.07 mm6.53 mm1.54 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497145338
Side View
Table 60.5%Crown 36.7°Girdle: THN-STKPavilion 40.4°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,694 AUD|Low: $269 AUD|High: $1,751 AUD|Avg: $915 AUD|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 12$390 AUD
Retailer 3$413 AUD
Retailer 10$591 AUD
Retailer 7$701 AUD
Retailer 5$743 AUD
Retailer 13$777 AUD
Retailer 6$791 AUD
Retailer 8$859 AUD
Retailer 4$916 AUD
Retailer 11$1,331 AUD
Retailer 9$1,350 AUD
Retailer 2$1,678 AUD
Brilliant Earth$1,694 AUD

43 data points across 13 retailers

24 retailers$390 AUD to $1,694 AUD

Retailer 1
-
$337 AUD
$237 USD
Price last confirmed 33 days ago
A
Retailer 2
-
$390 AUD
$274 USD
View
Final sale: no returns
Retailer 3
-
$391 AUD
$275 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$391 AUD
$275 USD
View
Price last confirmed 37 days ago
Retailer 5
-
$413 AUD
$290 USD
View
Price last confirmed 33 days ago
A
Retailer 6
-
$419 AUD
$294 USD
View
Retailer 7
-
$419 AUD
$294 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$419 AUD
$294 USD
View
Price last confirmed 30 days ago
A
Retailer 9
-
$492 AUD
HK$2,700 HKD
View
B+
Retailer 10
-
$591 AUD
$415 USD
View
A
Retailer 11
-
$701 AUD
€469 EUR
View
A
Retailer 12
-
$743 AUD
$522 USD
View
B+
Retailer 13
-
$777 AUD
$546 USD
View
B+
Retailer 14
-
$791 AUD
£438 GBP
View
B+
Retailer 15
-
$859 AUD
View
B+
Retailer 16
-
$916 AUD
$644 USD
View
B
Retailer 17
-
$1,331 AUD
$935 USD
View
Retailer 18
-
$1,345 AUD
$945 USD
View
Price last confirmed 22 days ago
Retailer 19
-
$1,345 AUD
$945 USD
View
Price last confirmed 32 days ago
B
Retailer 20
-
$1,350 AUD
$948 USD
View
B
Retailer 21
-
$1,416 AUD
SGD 1,344 SGD
View
B
Retailer 22
-
$1,419 AUD
$997 USD
View
B
Retailer 23
-
$1,678 AUD
£928 GBP
View
Most Expensive
B
Brilliant Earth
5063644A · Oct 31
$1,694 AUD
$1,190 USD
View
23 more retailers have this diamond
Prices start from $390 AUDSave up to $1,304 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
1.54ct Oval
$390 AUD