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Round|Natural|IGI

1.70ct I I1 Round Natural Diamond

EX • I/I1 • IGI 457087702

Shape and cutting style on the report: Round brilliant

Certificate IGI 457087702

Diamond specifications and retailer prices

From £2,354 GBP
$3,154 USD
As of November 1, 2026
Save £2,696 GBP (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,050 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 457087702. Listed at 8 retailers as of October 30, 2026, with prices from £2,354 to £5,050, a £2,696 spread on the same certified stone. NZ Jewellers lists it at £5,050. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
I
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 457087702
Dimensions7.61 × 7.65 × 4.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.61 mm7.65 mm1.70 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 457087702
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.5%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £5,050 GBP|Low: £1,696 GBP|High: £5,066 GBP|Avg: £2,652 GBP|+8.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9£1,717 GBP
Retailer 3£2,354 GBP
Retailer 4£2,626 GBP
Retailer 6£2,652 GBP
Retailer 5£2,659 GBP
Retailer 8£2,727 GBP
Retailer 7£3,030 GBP
Retailer 2£3,298 GBP
NZ Jewellers£5,050 GBP

40 data points across 9 retailers

8 retailers£2,354 GBP to £5,050 GBP

B+
Cheapest Retailer
-
£2,354 GBP
$3,154 USD
B+
Retailer 2
-
£2,626 GBP
$3,519 USD
View
B+
Retailer 3
-
£2,652 GBP
$3,553 USD
View
B+
Retailer 4
-
£2,659 GBP
$3,563 USD
View
B+
Retailer 5
-
£2,727 GBP
$3,654 USD
View
B+
Retailer 6
-
£3,030 GBP
$4,060 USD
View
B+
Retailer 7
-
£3,298 GBP
€4,209 EUR
View
Most Expensive
B
NZ Jewellers
9c7ce137-fd30-4470-8cea-9432465dd86b · Oct 30
£5,050 GBP
$6,767 USD
View
7 more retailers have this diamond
Prices start from £2,354 GBPSave up to £2,696 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 Round
£2,354 GBP