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Oval|Lab Grown|IGI

1.70ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG445036783

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445036783

Diamond specifications and retailer prices

From £627 GBP
$840 USD
As of October 28, 2026
Save £2,881 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,508 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445036783 or 445036783. Listed at 12 retailers as of October 27, 2026, with prices from £627 to £3,508, a £2,881 spread on the same certified stone. MOH London lists it at £3,508. 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
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445036783
Dimensions9.14 × 6.85 × 4.34 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.14 mm6.85 mm1.70 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445036783
Side View
Table 57.0%Crown 34.5°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 63.4%

Caratlytics Score

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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 28
Current: £3,508 GBP|Low: £627 GBP|High: £3,546 GBP|Avg: £1,609 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
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 9£627 GBP
Retailer 8£940 GBP
Retailer 13£1,022 GBP
Retailer 14£1,052 GBP
Retailer 3£1,090 GBP
Retailer 10£1,090 GBP
Retailer 7£1,220 GBP
Retailer 2£1,497 GBP
Retailer 5£1,515 GBP
Retailer 11£1,728 GBP
Retailer 4£2,032 GBP
Retailer 12£2,044 GBP
Retailer 6£3,122 GBP
MOH London£3,508 GBP

36 data points across 14 retailers

12 retailers£627 GBP to £3,508 GBP

A
Cheapest Retailer
-
£627 GBP
$840 USD
B+
Retailer 2
-
£940 GBP
$1,260 USD
View
A
Retailer 3
-
£1,022 GBP
$1,370 USD
View
A
Retailer 4
-
£1,052 GBP
$1,410 USD
View
Final sale: no returns
A
Retailer 5
-
£1,090 GBP
$1,461 USD
View
Retailer 6
-
£1,090 GBP
$1,461 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
£1,220 GBP
$1,635 USD
View
B+
Retailer 8
-
£1,497 GBP
View
B
Retailer 9
-
£1,728 GBP
$2,315 USD
View
B
Retailer 10
-
£2,032 GBP
$2,723 USD
View
B
Retailer 11
-
£2,044 GBP
$2,739 USD
View
Most Expensive
B
MOH London
LG445036783 · Oct 27
£3,508 GBP
View
11 more retailers have this diamond
Prices start from £627 GBPSave up to £2,881 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
£627 GBP