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Round|Natural|IGI

1.70ct J IF Round Natural Diamond

EX • J/IF • IGI 612327178

Shape and cutting style on the report: Round brilliant

Certificate IGI 612327178

Diamond specifications and retailer prices

From £4,325 GBP
$5,795 USD
As of November 1, 2026
Save £4,023 GBP (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £8,348 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 J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 612327178. Listed at 15 retailers as of October 30, 2026, with prices from £4,325 to £8,348, a £4,023 spread on the same certified stone. NZ Jewellers lists it at £8,348. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
J
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 612327178
Dimensions7.61 × 7.56 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.61 mm7.56 mm1.70 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 612327178
Side View
Table 55.0%Crown 36.7°Girdle: MediumPavilion 40.6°Culet: NoneDepth 63.1%

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 1
Current: £8,348 GBP|Low: £4,223 GBP|High: £8,348 GBP|Avg: £5,423 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
Retailer 15
November 2, 2026
Retailer 12£4,325 GBP
Retailer 15£4,353 GBP
Retailer 14£4,607 GBP
Retailer 6£4,608 GBP
Retailer 3£4,631 GBP
Retailer 2£4,852 GBP
Retailer 8£4,935 GBP
Retailer 7£4,991 GBP
Retailer 13£5,068 GBP
Retailer 4£5,111 GBP
Retailer 10£5,430 GBP
Retailer 5£5,759 GBP
Retailer 11£6,133 GBP
Retailer 9£7,354 GBP
NZ Jewellers£8,348 GBP

38 data points across 15 retailers

15 retailers£4,325 GBP to £8,348 GBP

A
Cheapest Retailer
-
£4,325 GBP
$5,795 USD
A
Retailer 2
-
£4,353 GBP
$5,833 USD
View
A
Retailer 3
-
£4,607 GBP
$6,173 USD
View
Final sale: no returns
A
Retailer 4
-
£4,608 GBP
$6,174 USD
View
A
Retailer 5
-
£4,631 GBP
$6,205 USD
View
A
Retailer 6
-
£4,852 GBP
View
A
Retailer 7
-
£4,935 GBP
View
A
Retailer 8
-
£4,991 GBP
$6,688 USD
View
A
Retailer 9
-
£5,068 GBP
$6,791 USD
View
B+
Retailer 10
-
£5,111 GBP
$6,848 USD
View
B+
Retailer 11
-
£5,430 GBP
€6,929 EUR
View
B+
Retailer 12
-
£5,759 GBP
$7,717 USD
View
B+
Retailer 13
-
£6,133 GBP
ZAR 132,755 ZAR
View
B+
Retailer 14
-
£7,354 GBP
View
Most Expensive
B
NZ Jewellers
698de770-00d1-4d62-b27b-5cad6c92c3de · Oct 30
£8,348 GBP
$11,186 USD
View
14 more retailers have this diamond
Prices start from £4,325 GBPSave up to £4,023 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 Round
£4,325 GBP