CaratHunter
Plans
Oval|Lab Grown|IGI

1.71ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG445038618

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445038618

Diamond specifications and retailer prices

From £638 GBP
$850 USD
As of October 29, 2026
Save £2,840 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,478 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445038618 or 445038618. Listed at 10 retailers as of October 29, 2026, with prices from £638 to £3,478, a £2,840 spread on the same certified stone. MOH London lists it at £3,478. 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
SymmetryVery Good
FluorescenceNone
Crown angle36.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445038618
Dimensions9.08 × 6.87 × 4.37 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
9.08 mm6.87 mm1.71 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG445038618
Side View
Table 56.0%Crown 36.1°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.6%

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: £3,478 GBP|Low: £638 GBP|High: £3,506 GBP|Avg: £1,775 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 2£638 GBP
Retailer 5£1,169 GBP
Retailer 3£1,211 GBP
Retailer 8£1,252 GBP
Retailer 7£1,661 GBP
Retailer 4£1,913 GBP
Retailer 6£2,199 GBP
Retailer 9£2,711 GBP
MOH London£3,478 GBP

14 data points across 9 retailers

10 retailers£638 GBP to £3,478 GBP

A
Cheapest Retailer
-
£638 GBP
$850 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
Retailer 5
-
£1,211 GBP
$1,613 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£1,211 GBP
$1,613 USD
View
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
LG445038618 · Oct 29
£3,478 GBP
View
9 more retailers have this diamond
Prices start from £638 GBPSave up to £2,840 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
£638 GBP