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Oval|Lab Grown|IGI

1.70ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG451057553

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057553

Diamond specifications and retailer prices

From $1,210 AUD
$850 USD
As of October 29, 2026
Save $4,937 AUD (80%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,147 AUD at MOH London · As of October 25, 2026
View at MOH London

About this 1.7ct lab-grown oval diamond

This 1.7ct 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 LG451057553 or 451057553. Listed at 9 retailers as of October 25, 2026, with prices from $1,210 to $6,147, a $4,937 spread on the same certified stone. MOH London lists it at $6,147. 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

1.70
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057553
Dimensions9.30 × 6.77 × 4.23 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.30 mm6.77 mm1.70 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057553
Side View
Table 55.0%Crown 33.9°Girdle: MED-VTKPavilion 41.4°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $6,147 AUD|Low: $1,210 AUD|High: $6,221 AUD|Avg: $3,535 AUD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 25, 2026
Retailer 2$1,210 AUD
Retailer 5$2,729 AUD
Retailer 3$3,037 AUD
Retailer 4$3,764 AUD
Retailer 6$4,276 AUD
MOH London$6,147 AUD

8 data points across 6 retailers

9 retailers$1,210 AUD to $6,147 AUD

A
Cheapest Retailer
-
$1,210 AUD
$850 USD
B+
Retailer 2
-
$1,647 AUD
$1,157 USD
View
B+
Retailer 3
-
$1,792 AUD
$1,259 USD
View
Retailer 4
-
$1,910 AUD
$1,342 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$1,910 AUD
$1,342 USD
View
B
Retailer 6
-
$3,037 AUD
$2,133 USD
View
B
Retailer 7
-
$3,582 AUD
$2,516 USD
View
B
Retailer 8
-
$3,764 AUD
$2,644 USD
View
Most Expensive
B
MOH London
LG451057553 · Oct 25
$6,147 AUD
£3,400 GBP
View
8 more retailers have this diamond
Prices start from $1,210 AUDSave up to $4,937 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
1.70ct Oval
$1,210 AUD