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Oval|Lab Grown|IGI

1.71ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG451056235

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451056235

Diamond specifications and retailer prices

From $1,880 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: $1,880 USD 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 1.71ct lab-grown oval diamond

This 1.71ct lab-grown oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056235 or 451056235. 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

1.71
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056235
Dimensions9.13 × 6.82 × 4.29 mm
L/W Ratio1.34
Girdle conditionFaceted
Cert comments
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Top View
9.13 mm6.82 mm1.71 ctJ / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056235
Side View
Table 58.5%Crown 35.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $1,880 USD|Low: $1,880 USD|High: $4,163 USD|Avg: $2,736 USD
Brilliant Earth
Retailer 2
December 30, 2025
Brilliant Earth$1,880 USD
Retailer 2$4,163 USD

5 data points across 2 retailers

1 retailer

B+
Brilliant Earth
8352051A · Oct 29
$1,880 USD
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B+
1.71ct Oval
$1,880 USD