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Oval|Lab Grown|IGI

1.70ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG519249676

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG519249676

Diamond specifications and retailer prices

From $3,025 AUD
$2,125 USD
As of October 28, 2026
4 retailers carry this diamond
Most expensive: $10,775 AUD at Taylor and Hart · As of October 27, 2026
View at Taylor and Hart

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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG519249676 or 519249676. Listed at 4 retailers as of October 28, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519249676
Dimensions9.39 × 6.59 × 4.28 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.39 mm6.59 mm1.70 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519249676
Side View
Table 59.5%Crown 37.6°Girdle: MED-THKPavilion 40.7°Culet: NoneDepth 64.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $13,843 AUD|Low: $2,689 AUD|High: $16,528 AUD|Avg: $6,607 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
October 28, 2026
Retailer 4$2,689 AUD
Retailer 3$3,025 AUD
Retailer 5$4,342 AUD
Retailer 6$4,428 AUD
Taylor and Hart$10,775 AUD
Retailer 1$13,843 AUD
Retailer 2$16,528 AUD

4 data points across 7 retailers

4 retailers

B
Cheapest Retailer
-
$3,025 AUD
$2,125 USD
Most Expensive
Taylor and Hart
N20ABVF · Oct 27
$10,775 AUD
$7,569 USD
View
Price under review
1 more retailer has this diamond
Prices start from $3,025 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.

B
1.70ct Oval
$3,025 AUD