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Oval|Lab Grown|IGI

1.70ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG451055477

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055477

Diamond specifications and retailer prices

From £638 GBP
$850 USD
As of October 29, 2026
Save £2,806 GBP (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,445 GBP at MOH London · As of October 27, 2026
View at MOH London

About this 1.7ct lab-grown oval diamond

This 1.7ct 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 LG451055477 or 451055477. Listed at 9 retailers as of October 27, 2026, with prices from £638 to £3,445, a £2,806 spread on the same certified stone. MOH London lists it at £3,445. 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

1.70
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle42.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055477
Dimensions9.29 × 6.79 × 4.34 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.29 mm6.79 mm1.70 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055477
Side View
Table 55.5%Crown 33.5°Girdle: MED-STKPavilion 42.2°Culet: NoneDepth 63.9%

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: £3,445 GBP|Low: £638 GBP|High: £3,486 GBP|Avg: £1,760 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£638 GBP
Retailer 2£1,039 GBP
Retailer 8£1,129 GBP
Retailer 5£1,204 GBP
Retailer 11£1,248 GBP
Retailer 10£1,652 GBP
Retailer 6£1,902 GBP
Retailer 9£2,186 GBP
Retailer 7£2,257 GBP
Retailer 3£2,696 GBP
MOH London£3,445 GBP

13 data points across 11 retailers

9 retailers£638 GBP to £3,445 GBP

A
Cheapest Retailer
-
£638 GBP
$850 USD
B+
Retailer 2
-
£1,039 GBP
$1,383 USD
View
B+
Retailer 3
-
£1,129 GBP
$1,504 USD
View
Retailer 4
-
£1,204 GBP
$1,604 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
£1,204 GBP
$1,604 USD
View
B
Retailer 6
-
£1,902 GBP
$2,533 USD
View
B
Retailer 7
-
£2,186 GBP
$2,911 USD
View
B
Retailer 8
-
£2,257 GBP
$3,006 USD
View
Most Expensive
B
MOH London
LG451055477 · Oct 27
£3,445 GBP
View
8 more retailers have this diamond
Prices start from £638 GBPSave up to £2,806 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
1.70ct Oval
£638 GBP