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Round|Lab Grown|IGI

1.71ct J VS2 Round Lab Grown Diamond

EX • J/VS2 • IGI LG451056231

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056231

Diamond specifications and retailer prices

From £933 GBP
$1,250 USD
As of October 29, 2026
Save £2,537 GBP (73%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,470 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.71ct lab-grown round diamond

This 1.71ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG451056231 or 451056231. Listed at 11 retailers as of October 29, 2026, with prices from £933 to £3,470, a £2,537 spread on the same certified stone. MOH London lists it at £3,470. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
J
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056231
Dimensions7.88 × 7.86 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.88 mm7.86 mm1.71 ctJ / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056231
Side View
Table 59.0%Crown 31.7°Girdle: THN-MEDPavilion 40.5°Culet: NoneDepth 58.5%

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: £3,470 GBP|Low: £933 GBP|High: £3,498 GBP|Avg: £2,020 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 2£933 GBP
Retailer 4£1,166 GBP
Retailer 5£1,336 GBP
Retailer 9£1,602 GBP
Retailer 7£1,656 GBP
Retailer 3£1,908 GBP
Retailer 6£2,193 GBP
Retailer 10£2,705 GBP
Retailer 8£3,460 GBP
MOH London£3,470 GBP

11 data points across 10 retailers

11 retailers£933 GBP to £3,470 GBP

A
Cheapest Retailer
-
£933 GBP
$1,250 USD
A
Retailer 2
-
£1,042 GBP
$1,396 USD
View
A
Retailer 3
-
£1,134 GBP
$1,519 USD
View
A
Retailer 4
-
£1,166 GBP
$1,562 USD
View
Final sale: no returns
Retailer 5
-
£1,208 GBP
$1,619 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£1,208 GBP
$1,619 USD
View
B+
Retailer 7
-
£1,336 GBP
$1,790 USD
View
B
Retailer 8
-
£1,908 GBP
$2,557 USD
View
B
Retailer 9
-
£2,193 GBP
$2,939 USD
View
B
Retailer 10
-
£2,265 GBP
$3,035 USD
View
Most Expensive
B
MOH London
LG451056231 · Oct 29
£3,470 GBP
View
10 more retailers have this diamond
Prices start from £933 GBPSave up to £2,537 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 Round
£933 GBP