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Oval|Lab Grown|IGI

1.71ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG447001992

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447001992

Diamond specifications and retailer prices

From £634 GBP
$850 USD
As of October 29, 2026
Save £2,606 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,241 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 LG447001992 or 447001992. Listed at 10 retailers as of October 27, 2026, with prices from £634 to £3,241, a £2,606 spread on the same certified stone. MOH London lists it at £3,241. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001992
Dimensions9.23 × 6.82 × 4.21 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.23 mm6.82 mm1.71 ctJ / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001992
Side View
Table 59.5%Crown 35.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.7%

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: £3,241 GBP|Low: £634 GBP|High: £3,276 GBP|Avg: £1,694 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 25, 2026
Retailer 2£634 GBP
Retailer 4£972 GBP
Retailer 6£1,438 GBP
Retailer 3£1,600 GBP
Retailer 5£1,985 GBP
Retailer 7£2,255 GBP
MOH London£3,241 GBP

10 data points across 7 retailers

10 retailers£634 GBP to £3,241 GBP

A
Cheapest Retailer
-
£634 GBP
$850 USD
B+
Retailer 2
-
£869 GBP
$1,164 USD
View
B+
Retailer 3
-
£945 GBP
$1,266 USD
View
B+
Retailer 4
-
£972 GBP
$1,302 USD
View
Final sale: no returns
Retailer 5
-
£1,008 GBP
$1,350 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£1,008 GBP
$1,350 USD
View
B
Retailer 7
-
£1,600 GBP
$2,144 USD
View
B
Retailer 8
-
£1,888 GBP
$2,530 USD
View
B
Retailer 9
-
£1,985 GBP
$2,660 USD
View
Most Expensive
B
MOH London
LG447001992 · Oct 27
£3,241 GBP
View
9 more retailers have this diamond
Prices start from £634 GBPSave up to £2,606 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
£634 GBP