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Oval|Lab Grown|IGI

1.71ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG447000609

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447000609

Diamond specifications and retailer prices

From £709 GBP
$950 USD
As of October 29, 2026
Save £2,834 GBP (80%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,543 GBP at MOH London · As of October 29, 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 LG447000609 or 447000609. Listed at 9 retailers as of October 29, 2026, with prices from £709 to £3,543, a £2,834 spread on the same certified stone. MOH London lists it at £3,543. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447000609
Dimensions9.04 × 6.78 × 4.32 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.04 mm6.78 mm1.71 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447000609
Side View
Table 57.5%Crown 37.1°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 63.7%

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: £3,543 GBP|Low: £706 GBP|High: £3,571 GBP|Avg: £1,617 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 11£706 GBP
Retailer 4£709 GBP
Retailer 2£946 GBP
Retailer 8£1,028 GBP
Retailer 5£1,097 GBP
Retailer 10£1,523 GBP
Retailer 6£1,736 GBP
Retailer 9£2,044 GBP
Retailer 7£2,055 GBP
Retailer 3£2,455 GBP
MOH London£3,543 GBP

15 data points across 11 retailers

9 retailers£709 GBP to £3,543 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
Retailer 4
-
£1,097 GBP
$1,470 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
£1,097 GBP
$1,470 USD
View
B
Retailer 6
-
£1,736 GBP
$2,326 USD
View
B
Retailer 7
-
£2,044 GBP
$2,739 USD
View
B
Retailer 8
-
£2,055 GBP
$2,754 USD
View
Most Expensive
B
MOH London
LG447000609 · Oct 29
£3,543 GBP
View
8 more retailers have this diamond
Prices start from £709 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
£709 GBP