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Oval|Lab Grown|IGI

1.70ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG445036756

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445036756

Diamond specifications and retailer prices

From £702 GBP
$940 USD
As of October 29, 2026
Save £1,676 GBP (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,642 GBP at MOH London · As of October 21, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445036756 or 445036756. Listed at 11 retailers as of October 29, 2026, with a 239% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445036756
Dimensions9.06 × 6.74 × 4.32 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.06 mm6.74 mm1.70 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445036756
Side View
Table 59.5%Crown 34.2°Girdle: STK-THKPavilion 42.1°Culet: NoneDepth 64.1%

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: £3,642 GBP|Low: £702 GBP|High: £3,670 GBP|Avg: £1,825 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
October 18, 2026
Retailer 6£702 GBP
Retailer 2£1,093 GBP
Retailer 10£1,190 GBP
Retailer 11£1,223 GBP
Retailer 7£1,268 GBP
Retailer 5£1,283 GBP
Retailer 12£1,396 GBP
Retailer 3£1,726 GBP
Retailer 8£1,999 GBP
Retailer 13£2,302 GBP
Retailer 9£2,377 GBP
Retailer 4£3,631 GBP
MOH London£3,642 GBP

13 data points across 13 retailers

11 retailers£702 GBP to £2,377 GBP

A
Cheapest Retailer
-
£702 GBP
$940 USD
A
Retailer 2
-
£1,093 GBP
$1,465 USD
View
B+
Retailer 3
-
£1,190 GBP
$1,594 USD
View
B+
Retailer 4
-
£1,223 GBP
$1,639 USD
View
Final sale: no returns
Retailer 5
-
£1,268 GBP
$1,699 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,268 GBP
$1,699 USD
View
B+
Retailer 7
-
£1,396 GBP
$1,870 USD
View
B
Retailer 8
-
£1,999 GBP
$2,679 USD
View
B
Retailer 9
-
£2,302 GBP
$3,084 USD
View
B
Retailer 10
-
£2,377 GBP
$3,185 USD
View
Most Expensive
MOH London
LG445036756 · Oct 21
£3,642 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from £702 GBPSave up to £1,676 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