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Oval|Lab Grown|IGI

1.70ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG442069387

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG442069387

Diamond specifications and retailer prices

From £627 GBP
$840 USD
As of October 29, 2026
Save £3,422 GBP (85%) vs most expensive(unlock to see where)
11 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 LG442069387 or 442069387. Listed at 11 retailers as of October 29, 2026, with prices from £627 to £4,049, a £3,422 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
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442069387
Dimensions9.44 × 6.85 × 4.21 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.44 mm6.85 mm1.70 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442069387
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.5%

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: £4,049 GBP|Low: £627 GBP|High: £4,077 GBP|Avg: £2,059 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
October 29, 2026
Retailer 6£627 GBP
Retailer 5£1,216 GBP
Retailer 10£1,322 GBP
Retailer 11£1,361 GBP
Retailer 7£1,411 GBP
Retailer 12£1,537 GBP
Retailer 3£1,896 GBP
Retailer 8£2,217 GBP
Retailer 2£2,432 GBP
Retailer 9£2,644 GBP
Retailer 4£4,038 GBP
MOH London£4,049 GBP

15 data points across 12 retailers

11 retailers£627 GBP to £4,049 GBP

A
Cheapest Retailer
-
£627 GBP
$840 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
-
£2,217 GBP
$2,971 USD
View
B
Retailer 9
-
£2,432 GBP
$3,258 USD
View
B
Retailer 10
-
£2,644 GBP
$3,542 USD
View
Most Expensive
B
MOH London
LG442069387 · Oct 29
£4,049 GBP
View
10 more retailers have this diamond
Prices start from £627 GBPSave up to £3,422 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