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Oval|Lab Grown|IGI

1.59ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG578326356

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG578326356

Diamond specifications and retailer prices

From $430 AUD
$302 USD
As of October 29, 2026
Save $1,321 AUD (75%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,751 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.59ct lab-grown oval diamond

This 1.59ct 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 LG578326356 or 578326356. Listed at 22 retailers as of October 29, 2026, with prices from $430 to $1,751, a $1,321 spread on the same certified stone. Brilliant Earth lists it at $1,751. 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

1.59
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578326356
Dimensions9.22 × 6.60 × 4.14 mm
L/W Ratio1.40
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
9.22 mm6.60 mm1.59 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578326356
Side View
Table 59.0%Crown 37.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.7%

Caratlytics Score

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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: $1,751 AUD|Low: $276 AUD|High: $1,808 AUD|Avg: $934 AUD|-3.1%
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
October 31, 2026
Retailer 12$401 AUD
Retailer 4$424 AUD
Retailer 11$609 AUD
Retailer 7$719 AUD
Retailer 3$786 AUD
Retailer 13$792 AUD
Retailer 6$817 AUD
Retailer 2$868 AUD
Retailer 5$946 AUD
Retailer 8$1,331 AUD
Retailer 10$1,388 AUD
Retailer 9$1,734 AUD
Brilliant Earth$1,751 AUD

44 data points across 13 retailers

22 retailers$430 AUD to $1,751 AUD

Retailer 1
-
$347 AUD
$244 USD
Price last confirmed 32 days ago
Retailer 2
-
$403 AUD
$283 USD
View
Price last confirmed 17 days ago
Retailer 3
-
$403 AUD
$283 USD
View
Price last confirmed 35 days ago
Retailer 4
-
$424 AUD
$298 USD
View
Price last confirmed 32 days ago
A
Retailer 5
-
$430 AUD
$302 USD
View
Retailer 6
-
$430 AUD
$302 USD
View
Price last confirmed 21 days ago
Retailer 7
-
$430 AUD
$302 USD
View
Price last confirmed 29 days ago
A
Retailer 8
-
$510 AUD
HK$2,800 HKD
View
B+
Retailer 9
-
$609 AUD
$428 USD
View
A
Retailer 10
-
$719 AUD
€481 EUR
View
B+
Retailer 11
-
$786 AUD
$552 USD
View
B+
Retailer 12
-
$792 AUD
$556 USD
View
B+
Retailer 13
-
$817 AUD
£452 GBP
View
B+
Retailer 14
-
$868 AUD
View
B+
Retailer 15
-
$946 AUD
$665 USD
View
Retailer 16
-
$1,331 AUD
$935 USD
View
Price last confirmed 13 days ago
Retailer 17
-
$1,384 AUD
$972 USD
View
Price last confirmed 21 days ago
Retailer 18
-
$1,384 AUD
$972 USD
View
Price last confirmed 31 days ago
B
Retailer 19
-
$1,388 AUD
$975 USD
View
B
Retailer 20
-
$1,457 AUD
SGD 1,383 SGD
View
Retailer 21
-
$1,734 AUD
£959 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
7306134A · Oct 29
$1,751 AUD
$1,230 USD
View
21 more retailers have this diamond
Prices start from $430 AUDSave up to $1,321 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
1.59ct Oval
$430 AUD