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Oval|Lab Grown|IGI

1.71ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG451055435

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055435

Diamond specifications and retailer prices

From $1,210 AUD
$850 USD
As of October 29, 2026
Save $5,384 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,594 AUD at MOH London · As of October 29, 2026
View at MOH London

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055435 or 451055435. Listed at 10 retailers as of October 29, 2026, with prices from $1,210 to $6,594, a $5,384 spread on the same certified stone. MOH London lists it at $6,594. 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
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055435
Dimensions9.20 × 6.78 × 4.27 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.20 mm6.78 mm1.71 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055435
Side View
Table 57.5%Crown 37.4°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 63.0%

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 29
Current: $6,594 AUD|Low: $1,210 AUD|High: $6,639 AUD|Avg: $3,244 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 18, 2026
Retailer 5$1,210 AUD
Retailer 2$1,980 AUD
Retailer 9$2,154 AUD
Retailer 10$2,217 AUD
Retailer 6$2,296 AUD
Retailer 3$2,374 AUD
Retailer 12$3,149 AUD
Retailer 7$3,627 AUD
Retailer 11$4,168 AUD
Retailer 8$4,305 AUD
Retailer 4$5,140 AUD
MOH London$6,594 AUD

13 data points across 12 retailers

10 retailers$1,210 AUD to $6,594 AUD

A
Cheapest Retailer
-
$1,210 AUD
$850 USD
A
Retailer 2
-
$1,980 AUD
$1,391 USD
View
B+
Retailer 3
-
$2,154 AUD
$1,513 USD
View
A
Retailer 4
-
$2,217 AUD
$1,557 USD
View
Final sale: no returns
Retailer 5
-
$2,296 AUD
$1,613 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$2,296 AUD
$1,613 USD
View
B
Retailer 7
-
$3,627 AUD
$2,548 USD
View
B
Retailer 8
-
$4,168 AUD
$2,928 USD
View
B
Retailer 9
-
$4,305 AUD
$3,024 USD
View
Most Expensive
B
MOH London
LG451055435 · Oct 29
$6,594 AUD
£3,647 GBP
View
9 more retailers have this diamond
Prices start from $1,210 AUDSave up to $5,384 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
1.71ct Oval
$1,210 AUD