Oval|Natural|IGI

1.70ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 729536821

Shape and cutting style on the report: Oval brilliant

Certificate IGI 729536821

Diamond specifications and retailer prices

From £2,212 GBP
As of November 4, 2026
Save £2,129 GBP (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,583 GBP at NZ Jewellers · As of August 30, 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 729536821. Listed at 17 retailers as of November 4, 2026, with a 96% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 729536821
Dimensions9.41 × 6.99 × 4.13 mm
L/W Ratio1.35
Girdle conditionFaceted
Top View
9.41 mm6.99 mm1.70 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 729536821
Side View
Table 66.0%Crown 33.5°Girdle: MED-THKPavilion 40.3°CuletDepth 59.1%

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: Nov 4
Current: £4,341 GBP|Low: £2,212 GBP|High: £4,451 GBP|Avg: £2,846 GBP
NZ Jewellers
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
November 6, 2026
Retailer 3£2,212 GBP
Retailer 13£2,385 GBP
Retailer 12£2,409 GBP
Retailer 2£2,418 GBP
Retailer 6£2,492 GBP
Retailer 14£2,492 GBP
Retailer 11£2,588 GBP
Retailer 4£2,599 GBP
Retailer 7£2,625 GBP
Retailer 5£2,876 GBP
Retailer 10£2,917 GBP
Retailer 8£3,041 GBP
Retailer 9£4,167 GBP
NZ Jewellers£4,341 GBP

35 data points across 14 retailers

17 retailers£2,212 GBP to £4,341 GBP

B+
Cheapest Retailer
-
£2,212 GBP
B+
Retailer 2
-
£2,385 GBP
View
B+
Retailer 3
-
£2,409 GBP
View
A
Retailer 4
-
£2,418 GBP
View
A
Retailer 5
-
£2,492 GBP
View
Retailer 6
-
£2,492 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,588 GBP
View
B+
Retailer 8
-
£2,599 GBP
View
B+
Retailer 9
-
£2,625 GBP
View
Retailer 10
-
£2,631 GBP
View
Price last confirmed 53 days ago
B+
Retailer 11
-
£2,876 GBP
View
B+
Retailer 12
-
£2,917 GBP
View
Retailer 13
-
£3,035 GBP
View
Price last confirmed 66 days ago
B+
Retailer 14
-
£3,041 GBP
View
B
Retailer 15
-
£4,167 GBP
View
B
Retailer 16
-
£4,341 GBP
View
Most Expensive
NZ Jewellers
51cad5a3-b34c-4d60-a589-0ba23826ae19 · Aug 30
£4,583 GBP
$6,134 USD
View
Price last confirmed 68 days ago
16 more retailers have this diamond
Prices start from £2,212 GBPSave up to £2,129 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
£2,212 GBP