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Oval|Lab Grown|IGI

1.70ct K SI2 Oval Lab Grown Diamond

ID • K/SI2 • IGI LG451057928

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057928

Diamond specifications and retailer prices

From £1,440 GBP
As of November 5, 2026
Save £3,316 GBP (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,756 GBP at MOH London · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057928 or 451057928. Listed at 8 retailers as of November 5, 2026, with prices from £1,440 to £4,756, a £3,316 spread on the same certified stone. MOH London lists it at £4,756. 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
K
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057928
Dimensions9.58 × 6.81 × 4.04 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.58 mm6.81 mm1.70 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057928
Side View
Table 62.0%Crown 33.8°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,756 GBP|Low: £1,440 GBP|High: £4,832 GBP|Avg: £3,019 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 3£1,440 GBP
Retailer 5£2,138 GBP
Retailer 4£2,614 GBP
Retailer 2£2,742 GBP
Retailer 6£3,737 GBP
MOH London£4,756 GBP

13 data points across 6 retailers

8 retailers£1,440 GBP to £4,756 GBP

B+
Cheapest Retailer
-
£1,440 GBP
B+
Retailer 2
-
£1,566 GBP
View
B
Retailer 3
-
£1,670 GBP
View
Retailer 4
-
£1,670 GBP
View
Price last confirmed 26 days ago
B
Retailer 5
-
£2,614 GBP
View
B
Retailer 6
-
£2,742 GBP
View
B
Retailer 7
-
£3,130 GBP
View
Most Expensive
B
MOH London
LG451057928 · Nov 5
£4,756 GBP
View
7 more retailers have this diamond
Prices start from £1,440 GBPSave up to £3,316 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.

B+
1.70ct Oval
£1,440 GBP