Round|Natural|GIA

1.70ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 3515598560

Certificate GIA 3515598560

Diamond specifications and retailer prices

From £4,115 GBP
$5,514 USD
As of October 30, 2026
Save £3,599 GBP (47%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £8,711 GBP at NZ Jewellers · As of October 20, 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 3515598560. Listed at 24 retailers as of October 29, 2026, with a 87% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 3515598560
Dimensions7.69 × 7.65 × 4.72 mm
L/W Ratio1.01
Star length50%
Top View
7.69 mm7.65 mm1.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515598560
Side View
Table 58.0%Crown 34°Girdle: ThickPavilion 41.4°Culet: NoneDepth 61.6%

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: Oct 30
Current: £5,692 GBP|Low: £3,992 GBP|High: £7,766 GBP|Avg: £5,251 GBP|+3.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6£4,207 GBP
Retailer 7£4,356 GBP
Retailer 9£4,392 GBP
Retailer 2£4,649 GBP
Retailer 5£4,718 GBP
Retailer 3£4,962 GBP
Retailer 1£5,692 GBP
Retailer 8£5,741 GBP
Retailer 10£6,210 GBP
Retailer 4£7,714 GBP

36 data points across 10 retailers

24 retailers£4,115 GBP to £7,714 GBP

B+
Cheapest Retailer
-
£4,115 GBP
$5,514 USD
B+
Retailer 2
-
£4,207 GBP
$5,637 USD
View
B+
Retailer 3
-
£4,356 GBP
$5,836 USD
View
Final sale: no returns
B+
Retailer 4
-
£4,649 GBP
$6,229 USD
View
Retailer 5
-
£4,718 GBP
$6,322 USD
View
Price last confirmed 42 days ago
B+
Retailer 6
-
£4,718 GBP
$6,322 USD
View
Retailer 7
-
£4,718 GBP
$6,322 USD
View
Price last confirmed 15 days ago
Retailer 8
-
£4,718 GBP
$6,322 USD
View
Price last confirmed 23 days ago
Retailer 9
-
£4,718 GBP
$6,322 USD
View
Price last confirmed 31 days ago
Retailer 10
-
£4,718 GBP
$6,322 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£4,962 GBP
View
B
Retailer 12
-
£5,045 GBP
$6,760 USD
View
B
Retailer 13
-
£5,045 GBP
$6,760 USD
View
B
Retailer 14
-
£5,217 GBP
$6,990 USD
View
Retailer 15
-
£5,444 GBP
$7,295 USD
View
Price last confirmed 21 days ago
Retailer 16
-
£5,444 GBP
$7,295 USD
View
Price last confirmed 39 days ago
Retailer 17
-
£5,444 GBP
$7,295 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
£5,444 GBP
$7,295 USD
View
B
Retailer 19
-
£5,692 GBP
€7,263 EUR
View
Retailer 20
-
£5,741 GBP
$7,692 USD
View
Price last confirmed 16 days ago
B
Retailer 21
-
£7,714 GBP
View
Retailer 22
-
£8,711 GBP
$11,672 USD
View
Price last confirmed 41 days ago
Retailer 23
-
£8,711 GBP
$11,672 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
b4ae3efc-6d45-444a-9a24-6e8e8b9a0d18 · Oct 20
£8,711 GBP
$11,672 USD
View
Price last confirmed 10 days ago
23 more retailers have this diamond
Prices start from £4,115 GBPSave up to £3,599 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
£4,115 GBP