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Oval|Lab Grown|IGI

1.71ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG447002191

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447002191

Diamond specifications and retailer prices

From £709 GBP
$950 USD
As of October 29, 2026
Save £2,820 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,529 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447002191 or 447002191. Listed at 10 retailers as of October 27, 2026, with prices from £709 to £3,529, a £2,820 spread on the same certified stone. MOH London lists it at £3,529. 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
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447002191
Dimensions9.28 × 6.68 × 4.17 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.28 mm6.68 mm1.71 ctI / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447002191
Side View
Table 57.0%Crown 35.3°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,529 GBP|Low: £709 GBP|High: £3,571 GBP|Avg: £1,646 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 25, 2026
Retailer 4£709 GBP
Retailer 2£946 GBP
Retailer 8£1,028 GBP
Retailer 9£1,058 GBP
Retailer 5£1,097 GBP
Retailer 11£1,523 GBP
Retailer 6£1,736 GBP
Retailer 10£2,044 GBP
Retailer 7£2,055 GBP
Retailer 3£2,455 GBP
MOH London£3,529 GBP

14 data points across 11 retailers

10 retailers£709 GBP to £3,529 GBP

A
Cheapest Retailer
-
£709 GBP
$950 USD
B+
Retailer 2
-
£946 GBP
$1,267 USD
View
B+
Retailer 3
-
£1,028 GBP
$1,378 USD
View
B+
Retailer 4
-
£1,058 GBP
$1,418 USD
View
Final sale: no returns
Retailer 5
-
£1,097 GBP
$1,470 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,097 GBP
$1,470 USD
View
B
Retailer 7
-
£1,736 GBP
$2,326 USD
View
B
Retailer 8
-
£2,044 GBP
$2,739 USD
View
B
Retailer 9
-
£2,055 GBP
$2,754 USD
View
Most Expensive
B
MOH London
LG447002191 · Oct 27
£3,529 GBP
View
9 more retailers have this diamond
Prices start from £709 GBPSave up to £2,820 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
£709 GBP