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Round|Natural|GIA

1.70ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2547477959

Certificate GIA 2547477959

Diamond specifications and retailer prices

From £3,836 GBP
$5,140 USD
As of October 30, 2026
Save £4,875 GBP (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £8,711 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 2547477959. Listed at 19 retailers as of October 30, 2026, with prices from £3,836 to £8,711, a £4,875 spread on the same certified stone. NZ Jewellers lists it at £8,711. 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 angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2547477959
Dimensions7.57 × 7.62 × 4.77 mm
L/W Ratio1.01
Top View
7.57 mm7.62 mm1.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547477959
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°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 30
Current: £5,381 GBP|Low: £3,798 GBP|High: £7,766 GBP|Avg: £5,243 GBP|+4.7%
Retailer 1
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 15£3,836 GBP
Retailer 14£4,115 GBP
Retailer 13£4,356 GBP
Retailer 12£4,392 GBP
Retailer 2£4,718 GBP
Retailer 9£4,805 GBP
Retailer 8£4,962 GBP
Retailer 5£5,247 GBP
Retailer 7£5,247 GBP
Retailer 1£5,381 GBP
Retailer 6£5,426 GBP
Retailer 3£5,741 GBP
Retailer 4£6,210 GBP
Retailer 11£7,550 GBP
Retailer 10£7,714 GBP

39 data points across 15 retailers

19 retailers£3,836 GBP to £8,711 GBP

B+
Cheapest Retailer
-
£3,836 GBP
$5,140 USD
B+
Retailer 2
-
£4,115 GBP
$5,514 USD
View
B+
Retailer 3
-
£4,276 GBP
A$8,814 AUD
View
B
Retailer 4
-
£4,356 GBP
$5,836 USD
View
Final sale: no returns
Retailer 5
-
£4,392 GBP
$5,885 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
£4,718 GBP
$6,322 USD
View
B
Retailer 7
-
£4,718 GBP
$6,322 USD
View
B
Retailer 8
-
£4,718 GBP
$6,322 USD
View
B
Retailer 9
-
£4,805 GBP
$6,438 USD
View
B+
Retailer 10
-
£4,962 GBP
View
B
Retailer 11
-
£5,247 GBP
$7,030 USD
View
B
Retailer 12
-
£5,247 GBP
$7,030 USD
View
B
Retailer 13
-
£5,381 GBP
€6,867 EUR
View
B
Retailer 14
-
£5,426 GBP
$7,270 USD
View
B
Retailer 15
-
£5,444 GBP
$7,295 USD
View
Retailer 16
-
£5,741 GBP
$7,692 USD
View
Price last confirmed 7 days ago
B
Retailer 17
-
£7,550 GBP
$10,117 USD
View
B
Retailer 18
-
£7,714 GBP
View
Most Expensive
B
NZ Jewellers
758745ed-4b3c-4bed-805f-eed29e38d974 · Oct 30
£8,711 GBP
$11,672 USD
View
18 more retailers have this diamond
Prices start from £3,836 GBPSave up to £4,875 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
£3,836 GBP