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Oval|Lab Grown|IGI

1.58ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG789633250

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG789633250

Diamond specifications and retailer prices

From $288 AUD
$202 USD
As of October 26, 2026
Save $1,449 AUD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,737 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.58ct lab-grown oval diamond

This 1.58ct 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 LG789633250 or 789633250. Listed at 18 retailers as of October 26, 2026, with prices from $288 to $1,737, a $1,449 spread on the same certified stone. Brilliant Earth lists it at $1,737. 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

1.58
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789633250
Dimensions9.70 × 6.50 × 3.97 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.70 mm6.50 mm1.58 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789633250
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 61.1%

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 26
Current: $1,737 AUD|Low: $276 AUD|High: $1,737 AUD|Avg: $803 AUD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 18$288 AUD
Retailer 7$320 AUD
Retailer 16$333 AUD
Retailer 17$357 AUD
Retailer 12$398 AUD
Retailer 15$401 AUD
Retailer 2$583 AUD
Retailer 5$619 AUD
Retailer 13$651 AUD
Retailer 8$726 AUD
Retailer 11$766 AUD
Retailer 9$774 AUD
Retailer 6$924 AUD
Retailer 4$1,147 AUD
Retailer 10$1,159 AUD
Retailer 3$1,402 AUD
Retailer 14$1,671 AUD
Brilliant Earth$1,737 AUD

40 data points across 18 retailers

18 retailers$288 AUD to $1,737 AUD

A
Cheapest Retailer
-
$288 AUD
$202 USD
Retailer 2
-
$333 AUD
$234 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$357 AUD
$251 USD
View
A
Retailer 4
-
$398 AUD
£220 GBP
View
A
Retailer 5
-
$401 AUD
HK$2,200 HKD
View
A
Retailer 6
-
$583 AUD
€390 EUR
View
B+
Retailer 7
-
$619 AUD
$435 USD
View
A
Retailer 8
-
$651 AUD
£360 GBP
View
A
Retailer 9
-
$726 AUD
$510 USD
View
A
Retailer 10
-
$766 AUD
View
A
Retailer 11
-
$774 AUD
$544 USD
View
B+
Retailer 12
-
$924 AUD
$649 USD
View
B+
Retailer 13
-
$1,147 AUD
$806 USD
View
B+
Retailer 14
-
$1,159 AUD
SGD 1,100 SGD
View
Retailer 15
-
$1,310 AUD
$920 USD
View
Price last confirmed 10 days ago
Retailer 16
-
$1,402 AUD
$985 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
$1,671 AUD
£924 GBP
View
Most Expensive
B
Brilliant Earth
18521721A · Oct 29
$1,737 AUD
$1,220 USD
View
17 more retailers have this diamond
Prices start from $288 AUDSave up to $1,449 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
1.58ct Oval
$288 AUD