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Oval|Lab Grown|IGI

1.71ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG447099724

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447099724

Diamond specifications and retailer prices

From £631 GBP
$840 USD
As of October 29, 2026
Save £2,834 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,465 GBP at MOH London · As of October 27, 2026
View at MOH London

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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447099724 or 447099724. Listed at 10 retailers as of October 27, 2026, with prices from £631 to £3,465, a £2,834 spread on the same certified stone. MOH London lists it at £3,465. 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
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099724
Dimensions9.30 × 6.75 × 4.27 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.30 mm6.75 mm1.71 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099724
Side View
Table 59.0%Crown 36.3°Girdle: STK-THKPavilion 41°Culet: NoneDepth 63.3%

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 29
Current: £3,465 GBP|Low: £631 GBP|High: £3,502 GBP|Avg: £1,836 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 25, 2026
Retailer 2£631 GBP
Retailer 4£1,169 GBP
Retailer 7£1,252 GBP
Retailer 6£1,661 GBP
Retailer 3£1,913 GBP
Retailer 5£2,199 GBP
Retailer 8£2,711 GBP
MOH London£3,465 GBP

9 data points across 8 retailers

10 retailers£631 GBP to £3,465 GBP

A
Cheapest Retailer
-
£631 GBP
$840 USD
B+
Retailer 2
-
£1,045 GBP
$1,391 USD
View
B+
Retailer 3
-
£1,136 GBP
$1,513 USD
View
B+
Retailer 4
-
£1,169 GBP
$1,557 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,211 GBP
$1,613 USD
View
Retailer 6
-
£1,211 GBP
$1,613 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£1,913 GBP
$2,548 USD
View
B
Retailer 8
-
£2,199 GBP
$2,928 USD
View
B
Retailer 9
-
£2,271 GBP
$3,024 USD
View
Most Expensive
B
MOH London
LG447099724 · Oct 27
£3,465 GBP
View
9 more retailers have this diamond
Prices start from £631 GBPSave up to £2,834 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
£631 GBP