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Round|Natural|GIA

1.70ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6542939271

Certificate GIA 6542939271

Diamond specifications and retailer prices

From £3,398 GBP
$4,553 USD
As of November 1, 2026
Save £4,001 GBP (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £7,399 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6542939271. Listed at 18 retailers as of October 30, 2026, with prices from £3,398 to £7,399, a £4,001 spread on the same certified stone. NZ Jewellers lists it at £7,399. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542939271
Dimensions7.65 × 7.69 × 4.69 mm
L/W Ratio1.01
Top View
7.65 mm7.69 mm1.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542939271
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: £7,399 GBP|Low: £2,958 GBP|High: £7,399 GBP|Avg: £4,344 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 2, 2026
Retailer 15£3,123 GBP
Retailer 21£3,398 GBP
Retailer 7£3,496 GBP
Retailer 19£3,699 GBP
Retailer 14£3,730 GBP
Retailer 17£3,730 GBP
Retailer 3£3,865 GBP
Retailer 9£3,963 GBP
Retailer 11£3,968 GBP
Retailer 8£4,008 GBP
Retailer 10£4,008 GBP
Retailer 22£4,008 GBP
Retailer 2£4,287 GBP
Retailer 5£4,403 GBP
Retailer 18£4,403 GBP
Retailer 20£4,553 GBP
Retailer 6£4,624 GBP
Retailer 16£4,710 GBP
Retailer 4£4,880 GBP
Retailer 12£5,190 GBP
Retailer 13£6,517 GBP
NZ Jewellers£7,399 GBP

34 data points across 22 retailers

18 retailers£3,398 GBP to £7,399 GBP

B+
Cheapest Retailer
-
£3,398 GBP
$4,553 USD
B+
Retailer 2
-
£3,491 GBP
$4,677 USD
View
B+
Retailer 3
-
£3,496 GBP
$4,684 USD
View
B+
Retailer 4
-
£3,699 GBP
$4,956 USD
View
Final sale: no returns
B+
Retailer 5
-
£3,730 GBP
$4,998 USD
View
B+
Retailer 6
-
£3,963 GBP
$5,311 USD
View
B+
Retailer 7
-
£4,008 GBP
$5,370 USD
View
B+
Retailer 8
-
£4,008 GBP
$5,370 USD
View
B+
Retailer 9
-
£4,008 GBP
$5,370 USD
View
B+
Retailer 10
-
£4,287 GBP
View
B
Retailer 11
-
£4,403 GBP
$5,900 USD
View
B
Retailer 12
-
£4,403 GBP
$5,900 USD
View
B
Retailer 13
-
£4,553 GBP
$6,100 USD
View
B+
Retailer 14
-
£4,624 GBP
$6,196 USD
View
B+
Retailer 15
-
£4,710 GBP
€6,011 EUR
View
Retailer 16
-
£4,880 GBP
$6,539 USD
View
Price last confirmed 18 days ago
B
Retailer 17
-
£6,517 GBP
View
Most Expensive
B
NZ Jewellers
5b1d2f17-7e90-48fd-948f-8d3661705a0b · Oct 30
£7,399 GBP
$9,914 USD
View
17 more retailers have this diamond
Prices start from £3,398 GBPSave up to £4,001 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
£3,398 GBP