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Oval|Lab Grown|IGI

1.70ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG492136745

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG492136745

Diamond specifications and retailer prices

From $1,552 AUD
$1,090 USD
As of October 31, 2026
6 retailers carry this diamond
Most expensive: $5,011 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492136745 or 492136745. Listed at 6 retailers as of October 31, 2026. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492136745
Dimensions9.51 × 6.80 × 4.19 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.51 mm6.80 mm1.70 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492136745
Side View
Table 58.5%Crown 34.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $7,727 AUD|Low: $1,552 AUD|High: $7,727 AUD|Avg: $3,756 AUD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 29, 2026
Retailer 3$1,552 AUD
Retailer 8$2,600 AUD
Retailer 2$2,674 AUD
Retailer 6$2,911 AUD
Retailer 7$3,596 AUD
Retailer 4$4,168 AUD
Retailer 5$4,852 AUD
Retailer 1$7,727 AUD

3 data points across 8 retailers

6 retailers

A
Cheapest Retailer
-
$1,552 AUD
$1,090 USD
Retailer 2
-
$2,305 AUD
$1,619 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$2,507 AUD
$1,761 USD
View
Price last confirmed 35 days ago
Retailer 4
-
$2,637 AUD
$1,852 USD
View
Price last confirmed 32 days ago
Retailer 5
-
$4,852 AUD
$3,408 USD
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
5d35df1a-d2dd-4ae3-9e4b-4588a774b44c · Sep 28
$5,011 AUD
$3,520 USD
View
Price last confirmed 33 days ago
5 more retailers have this diamond
Prices start from $1,552 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
$1,552 AUD