CaratHunter
Plans
Round|Natural|GIA

1.70ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2486987805

Certificate GIA 2486987805

Diamond specifications and retailer prices

From £3,566 GBP
HK$37,100 HKD
As of October 29, 2026
Save £4,540 GBP (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £8,106 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 2486987805. Listed at 15 retailers as of October 29, 2026, with prices from £3,566 to £8,106, a £4,540 spread on the same certified stone. NZ Jewellers lists it at £8,106. 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 angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2486987805
Dimensions7.64 × 7.60 × 4.79 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
7.64 mm7.60 mm1.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2486987805
Side View
Table 56.0%Crown 34°GirdlePavilion 41.6°Culet: NoneDepth 62.8%

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 29
Current: £8,106 GBP|Low: £3,566 GBP|High: £8,106 GBP|Avg: £5,092 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
October 30, 2026
Retailer 5£3,566 GBP
Retailer 7£3,940 GBP
Retailer 4£4,227 GBP
Retailer 15£4,473 GBP
Retailer 9£4,618 GBP
Retailer 6£4,813 GBP
Retailer 11£4,847 GBP
Retailer 12£4,847 GBP
Retailer 13£4,847 GBP
Retailer 3£4,966 GBP
Retailer 2£5,297 GBP
Retailer 14£5,592 GBP
Retailer 8£6,290 GBP
Retailer 10£7,178 GBP
NZ Jewellers£8,106 GBP

29 data points across 15 retailers

15 retailers£3,566 GBP to £8,106 GBP

B+
Cheapest Retailer
-
£3,566 GBP
HK$37,100 HKD
Retailer 2
-
£4,104 GBP
SGD 7,386 SGD
View
Price last confirmed 16 days ago
B
Retailer 3
-
£4,227 GBP
$5,629 USD
View
B
Retailer 4
-
£4,473 GBP
$5,957 USD
View
Final sale: no returns
B
Retailer 5
-
£4,618 GBP
View
B
Retailer 6
-
£4,813 GBP
$6,410 USD
View
B
Retailer 7
-
£4,847 GBP
$6,454 USD
View
B
Retailer 8
-
£4,847 GBP
$6,454 USD
View
B
Retailer 9
-
£4,847 GBP
$6,454 USD
View
B
Retailer 10
-
£4,966 GBP
$6,612 USD
View
B
Retailer 11
-
£5,297 GBP
€6,718 EUR
View
B
Retailer 12
-
£5,592 GBP
$7,447 USD
View
B
Retailer 13
-
£6,290 GBP
View
B
Retailer 14
-
£7,178 GBP
View
Most Expensive
B
NZ Jewellers
f6369b8a-33a9-40e1-bee2-eecd729aa35f · Oct 30
£8,106 GBP
$10,795 USD
View
14 more retailers have this diamond
Prices start from £3,566 GBPSave up to £4,540 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
£3,566 GBP