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Oval|Lab Grown|IGI

1.56ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG818660685

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818660685

Diamond specifications and retailer prices

From $1,826 AUD
$1,280 USD
As of November 2, 2026
9 retailers carry this diamond
Most expensive: $1,826 AUD at Brilliant Earth
View at Brilliant Earth

About this 1.56ct lab-grown oval diamond

This 1.56ct 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 LG818660685 or 818660685. Listed at 9 retailers as of November 2, 2026. 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

1.56
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818660685
Dimensions9.57 × 6.55 × 4.02 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.57 mm6.55 mm1.56 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818660685
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $1,826 AUD|Low: $335 AUD|High: $1,855 AUD|Avg: $959 AUD|+1.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 5, 2026
Retailer 7$345 AUD
Retailer 10$382 AUD
Retailer 6$655 AUD
Retailer 4$693 AUD
Retailer 5$728 AUD
Retailer 3$912 AUD
Retailer 9$1,245 AUD
Retailer 11$1,306 AUD
Retailer 2$1,341 AUD
Retailer 8$1,553 AUD
Brilliant Earth$1,826 AUD

15 data points across 11 retailers

9 retailers

Retailer 1
-
$297 AUD
$208 USD
Price last confirmed 29 days ago
Retailer 2
-
$354 AUD
$248 USD
View
Price last confirmed 38 days ago
Retailer 3
-
$382 AUD
$268 USD
View
Price last confirmed 28 days ago
Retailer 4
-
$912 AUD
$639 USD
View
Price last confirmed 30 days ago
Retailer 5
-
$1,231 AUD
$863 USD
View
Price last confirmed 29 days ago
Retailer 6
-
$1,245 AUD
SGD 1,179 SGD
View
Price last confirmed 29 days ago
Retailer 7
-
$1,341 AUD
$940 USD
View
Price last confirmed 28 days ago
Retailer 8
-
$1,553 AUD
£857 GBP
View
Price last confirmed 29 days ago
Most Expensive
B
Brilliant Earth
21492487A · Nov 2
$1,826 AUD
$1,280 USD
View
8 more retailers have this diamond

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
1.56ct Oval
$1,826 AUD