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Oval|Lab Grown|IGI

1.70ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG451055761

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055761

Diamond specifications and retailer prices

From £702 GBP
$940 USD
As of October 30, 2026
Save £3,348 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,049 GBP at MOH London · As of October 29, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055761 or 451055761. Listed at 12 retailers as of October 29, 2026, with prices from £702 to £4,049, a £3,348 spread on the same certified stone. MOH London lists it at £4,049. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055761
Dimensions9.28 × 6.97 × 4.18 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.28 mm6.97 mm1.70 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055761
Side View
Table 60.0%Crown 35.8°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 60.0%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £4,049 GBP|Low: £702 GBP|High: £4,081 GBP|Avg: £2,022 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
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 2£702 GBP
Retailer 9£1,216 GBP
Retailer 13£1,322 GBP
Retailer 14£1,361 GBP
Retailer 3£1,411 GBP
Retailer 10£1,411 GBP
Retailer 4£1,537 GBP
Retailer 5£1,896 GBP
Retailer 7£1,936 GBP
Retailer 11£2,217 GBP
Retailer 8£2,432 GBP
Retailer 12£2,644 GBP
Retailer 6£4,038 GBP
MOH London£4,049 GBP

37 data points across 14 retailers

12 retailers£702 GBP to £4,049 GBP

A
Cheapest Retailer
-
£702 GBP
$940 USD
B+
Retailer 2
-
£1,216 GBP
$1,629 USD
View
B+
Retailer 3
-
£1,322 GBP
$1,772 USD
View
B+
Retailer 4
-
£1,361 GBP
$1,824 USD
View
Final sale: no returns
Retailer 5
-
£1,411 GBP
$1,890 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£1,411 GBP
$1,890 USD
View
B+
Retailer 7
-
£1,537 GBP
$2,060 USD
View
B
Retailer 8
-
£1,936 GBP
View
B
Retailer 9
-
£2,217 GBP
$2,971 USD
View
B
Retailer 10
-
£2,432 GBP
$3,258 USD
View
B
Retailer 11
-
£2,644 GBP
$3,542 USD
View
Most Expensive
B
MOH London
LG451055761 · Oct 29
£4,049 GBP
View
11 more retailers have this diamond
Prices start from £702 GBPSave up to £3,348 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
£702 GBP