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Oval|Lab Grown|IGI

1.71ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG756594792

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG756594792

Diamond specifications and retailer prices

From £404 GBP
A$828 AUD
As of October 29, 2026
3 retailers carry this diamond
Most expensive: £771 GBP at Rare Carat · As of September 6, 2026
View at Rare Carat

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG756594792 or 756594792. Listed at 3 retailers as of October 29, 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

1.71
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756594792
Dimensions9.94 × 6.73 × 4.00 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.94 mm6.73 mm1.71 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756594792
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 59.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £771 GBP|Low: £211 GBP|High: £991 GBP|Avg: £472 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 11, 2026
Retailer 10£211 GBP
Retailer 8£259 GBP
Retailer 3£307 GBP
Retailer 5£338 GBP
Retailer 7£380 GBP
Retailer 2£404 GBP
Retailer 9£430 GBP
Retailer 6£471 GBP
Retailer 11£624 GBP
Rare Carat£771 GBP
Retailer 4£991 GBP

2 data points across 11 retailers

3 retailers

A
Retailer 1
-
£211 GBP
HK$2,200 HKD
Price last confirmed 55 days ago
B+
Retailer 2
-
£404 GBP
A$828 AUD
View
Most Expensive
B
Rare Carat
128737-C · Sep 6
£771 GBP
$1,027 USD
View
Price last confirmed 53 days ago
2 more retailers have this diamond
Prices start from £404 GBP

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
£404 GBP