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Round|Natural|IGI

1.70ct J IF Round Natural Diamond

EX • J/IF • IGI 816642340

Shape and cutting style on the report: Round brilliant

Certificate IGI 816642340

Diamond specifications and retailer prices

From £3,687 GBP
₹470,439 INR
As of November 1, 2026
Save £4,521 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £8,342 GBP at NZ Jewellers · As of September 10, 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 816642340. Listed at 19 retailers as of October 30, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle32.5°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 816642340
Dimensions7.67 × 7.71 × 4.73 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.67 mm7.71 mm1.70 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 816642340
Side View
Table 56.0%Crown 32.5°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.5%

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: £8,207 GBP|Low: £3,687 GBP|High: £8,319 GBP|Avg: £5,203 GBP|-1.3%
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
Retailer 16
November 2, 2026
Retailer 11£3,687 GBP
Retailer 3£4,279 GBP
Retailer 8£4,340 GBP
Retailer 2£4,499 GBP
Retailer 6£4,529 GBP
Retailer 9£4,698 GBP
Retailer 15£4,874 GBP
Retailer 4£4,878 GBP
Retailer 13£4,926 GBP
Retailer 7£4,982 GBP
Retailer 12£4,992 GBP
Retailer 10£5,008 GBP
Retailer 5£5,662 GBP
Retailer 16£6,029 GBP
Retailer 14£7,229 GBP
NZ Jewellers£8,207 GBP

25 data points across 16 retailers

19 retailers£3,687 GBP to £8,207 GBP

A
Cheapest Retailer
-
£3,687 GBP
₹470,439 INR
A
Retailer 2
-
£4,279 GBP
$5,734 USD
View
A
Retailer 3
-
£4,340 GBP
$5,815 USD
View
A
Retailer 4
-
£4,499 GBP
$6,028 USD
View
Final sale: no returns
A
Retailer 5
-
£4,529 GBP
$6,069 USD
View
A
Retailer 6
-
£4,698 GBP
View
A
Retailer 7
-
£4,874 GBP
$6,530 USD
View
A
Retailer 8
-
£4,878 GBP
$6,536 USD
View
A
Retailer 9
-
£4,926 GBP
$6,600 USD
View
A
Retailer 10
-
£4,982 GBP
$6,676 USD
View
Retailer 11
-
£4,988 GBP
$6,683 USD
View
Price last confirmed 51 days ago
A
Retailer 12
-
£4,992 GBP
$6,689 USD
View
A
Retailer 13
-
£5,008 GBP
€6,391 EUR
View
B+
Retailer 14
-
£5,662 GBP
$7,587 USD
View
Retailer 15
-
£5,833 GBP
$7,815 USD
View
Price last confirmed 54 days ago
B+
Retailer 16
-
£6,029 GBP
ZAR 130,506 ZAR
View
B+
Retailer 17
-
£7,229 GBP
View
B
Retailer 18
-
£8,207 GBP
$10,997 USD
View
Most Expensive
NZ Jewellers
623e9d02-ecd4-411e-8164-4df6e142964d · Sep 10
£8,342 GBP
$11,177 USD
View
Price last confirmed 52 days ago
18 more retailers have this diamond
Prices start from £3,687 GBPSave up to £4,521 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
£3,687 GBP