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Oval|Lab Grown|IGI

1.55ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG771638077

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG771638077

Diamond specifications and retailer prices

From $1,641 AUD
$1,150 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: $1,641 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 1.55ct lab-grown oval diamond

This 1.55ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG771638077 or 771638077. Listed at a single retailer as of November 2, 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

1.55
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771638077
Dimensions9.04 × 6.56 × 4.14 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Top View
9.04 mm6.56 mm1.55 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771638077
Side View
Table 60.0%Crown 36.9°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 63.1%

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: $1,641 AUD|Low: $367 AUD|High: $1,641 AUD|Avg: $703 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
April 14, 2026
Retailer 2$367 AUD
Retailer 5$582 AUD
Retailer 6$692 AUD
Retailer 3$716 AUD
Retailer 4$963 AUD
Brilliant Earth$1,641 AUD

16 data points across 6 retailers

1 retailer

B
Brilliant Earth
17570074A · Nov 2
$1,641 AUD
$1,150 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
1.55ct Oval
$1,641 AUD