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Oval|Lab Grown|IGI

1.70ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG451055761

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055761

Diamond specifications and retailer prices

From $1,338 AUD
$940 USD
As of October 30, 2026
Save $6,385 AUD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,724 AUD at MOH London · As of October 29, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055761 or 451055761. Listed at 12 retailers as of October 29, 2026, with prices from $1,338 to $7,724, a $6,385 spread on the same certified stone. MOH London lists it at $7,724. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055761
Dimensions9.28 × 6.97 × 4.18 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.28 mm6.97 mm1.70 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055761
Side View
Table 60.0%Crown 35.8°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 60.0%

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 30
Current: $7,724 AUD|Low: $1,338 AUD|High: $7,785 AUD|Avg: $3,858 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
Retailer 13
Retailer 14
October 30, 2026
Retailer 2$1,338 AUD
Retailer 9$2,319 AUD
Retailer 13$2,523 AUD
Retailer 14$2,597 AUD
Retailer 3$2,691 AUD
Retailer 10$2,691 AUD
Retailer 4$2,933 AUD
Retailer 5$3,616 AUD
Retailer 7$3,692 AUD
Retailer 11$4,230 AUD
Retailer 8$4,638 AUD
Retailer 12$5,042 AUD
Retailer 6$7,702 AUD
MOH London$7,724 AUD

37 data points across 14 retailers

12 retailers$1,338 AUD to $7,724 AUD

A
Cheapest Retailer
-
$1,338 AUD
$940 USD
B+
Retailer 2
-
$2,319 AUD
$1,629 USD
View
B+
Retailer 3
-
$2,523 AUD
$1,772 USD
View
B+
Retailer 4
-
$2,597 AUD
$1,824 USD
View
Final sale: no returns
Retailer 5
-
$2,691 AUD
$1,890 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$2,691 AUD
$1,890 USD
View
B+
Retailer 7
-
$2,933 AUD
$2,060 USD
View
B
Retailer 8
-
$3,692 AUD
£2,042 GBP
View
B
Retailer 9
-
$4,230 AUD
$2,971 USD
View
B
Retailer 10
-
$4,638 AUD
$3,258 USD
View
B
Retailer 11
-
$5,042 AUD
$3,542 USD
View
Most Expensive
B
MOH London
LG451055761 · Oct 29
$7,724 AUD
£4,272 GBP
View
11 more retailers have this diamond
Prices start from $1,338 AUDSave up to $6,385 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
$1,338 AUD