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Oval|Lab Grown|IGI

1.61ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG508155086

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG508155086

Diamond specifications and retailer prices

From $336 AUD
$236 USD
As of October 28, 2026
Save $2,226 AUD (87%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,562 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.61ct lab-grown oval diamond

This 1.61ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508155086 or 508155086. Listed at 9 retailers as of October 28, 2026, with prices from $336 to $2,562, a $2,226 spread on the same certified stone. Brilliant Earth lists it at $2,562. 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

1.61
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508155086
Dimensions9.55 × 6.84 × 3.94 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
9.55 mm6.84 mm1.61 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508155086
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 57.6%

Caratlytics Score

How it works →
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 28
Current: $686 AUD|Low: $336 AUD|High: $1,506 AUD|Avg: $797 AUD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$336 AUD
Retailer 8$419 AUD
Retailer 4$501 AUD
Retailer 1$686 AUD
Retailer 7$725 AUD
Retailer 6$740 AUD
Retailer 2$828 AUD
Retailer 10$994 AUD
Retailer 9$1,269 AUD
Retailer 3$1,495 AUD

38 data points across 10 retailers

9 retailers$336 AUD to $2,562 AUD

A
Cheapest Retailer
-
$336 AUD
$236 USD
Final sale: no returns
A
Retailer 2
-
$419 AUD
HK$2,300 HKD
View
B+
Retailer 3
-
$501 AUD
$352 USD
View
A
Retailer 4
-
$686 AUD
£379 GBP
View
A
Retailer 5
-
$725 AUD
$509 USD
View
A
Retailer 6
-
$740 AUD
$520 USD
View
B+
Retailer 7
-
$1,269 AUD
$891 USD
View
B
Retailer 8
-
$1,495 AUD
£827 GBP
View
Most Expensive
B
Brilliant Earth
22273559A · Oct 29
$2,562 AUD
$1,800 USD
View
8 more retailers have this diamond
Prices start from $336 AUDSave up to $2,226 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
1.61ct Oval
$336 AUD