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Oval|Natural|IGI

1.70ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 768663715

Shape and cutting style on the report: Oval brilliant

Certificate IGI 768663715

Diamond specifications and retailer prices

From £1,863 GBP
As of November 5, 2026
Save £2,486 GBP (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,349 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.7ct natural oval diamond

This 1.7ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 768663715. Listed at 11 retailers as of November 5, 2026, with prices from £1,863 to £4,349, a £2,486 spread on the same certified stone. NZ Jewellers lists it at £4,349. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.5°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 768663715
Dimensions9.31 × 6.60 × 4.20 mm
L/W Ratio1.41
Girdle conditionFaceted
Top View
9.31 mm6.60 mm1.70 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 768663715
Side View
Table 58.0%Crown 33.5°Girdle: THK-VTKPavilion 40.1°Culet: NoneDepth 63.6%

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: Nov 5
Current: £4,349 GBP|Low: £1,863 GBP|High: £4,427 GBP|Avg: £2,562 GBP|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£1,863 GBP
Retailer 9£1,898 GBP
Retailer 10£2,080 GBP
Retailer 3£2,118 GBP
Retailer 11£2,161 GBP
Retailer 4£2,241 GBP
Retailer 8£2,400 GBP
Retailer 2£2,422 GBP
Retailer 5£2,539 GBP
Retailer 7£3,635 GBP
NZ Jewellers£4,349 GBP

41 data points across 11 retailers

11 retailers£1,863 GBP to £4,349 GBP

A
Cheapest Retailer
-
£1,863 GBP
A
Retailer 2
-
£1,898 GBP
View
B+
Retailer 3
-
£2,080 GBP
View
Retailer 4
-
£2,118 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£2,161 GBP
View
B+
Retailer 6
-
£2,241 GBP
View
B+
Retailer 7
-
£2,400 GBP
View
B+
Retailer 8
-
£2,422 GBP
View
B+
Retailer 9
-
£2,539 GBP
View
B+
Retailer 10
-
£3,635 GBP
View
Most Expensive
B
NZ Jewellers
6b397b13-3e03-47e2-aaa0-718f0bd4c57d · Nov 5
£4,349 GBP
$5,821 USD
View
10 more retailers have this diamond
Prices start from £1,863 GBPSave up to £2,486 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
£1,863 GBP