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Oval|Lab Grown|IGI

1.65ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG778684649

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG778684649

Diamond specifications and retailer prices

From $1,822 AUD
$1,280 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: $1,822 AUD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.65ct lab-grown oval diamond

This 1.65ct 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 LG778684649 or 778684649. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.65
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778684649
Dimensions9.28 × 6.72 × 4.17 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Top View
9.28 mm6.72 mm1.65 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778684649
Side View
Table 61.0%Crown 36.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $1,822 AUD|Low: $231 AUD|High: $2,164 AUD|Avg: $963 AUD|-15.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
June 17, 2026
Retailer 9$572 AUD
Retailer 2$666 AUD
Retailer 6$803 AUD
Retailer 5$808 AUD
Retailer 3$981 AUD
Retailer 4$986 AUD
Retailer 8$1,224 AUD
Retailer 7$1,482 AUD
Brilliant Earth$1,822 AUD

63 data points across 9 retailers

1 retailer

B
Brilliant Earth
17995953A · Oct 29
$1,822 AUD
$1,280 USD
View

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
1.65ct Oval
$1,822 AUD