Round|Natural|GIA

1.70ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2547172823

Certificate GIA 2547172823

Diamond specifications and retailer prices

From €4,251 EUR
HK$37,100 HKD
As of November 1, 2026
Save €4,016 EUR (49%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €9,385 EUR at NZ Jewellers · As of September 28, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2547172823. Listed at 20 retailers as of November 1, 2026, with a 94% 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2547172823
Dimensions7.69 × 7.62 × 4.70 mm
L/W Ratio1.01
Top View
7.69 mm7.62 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547172823
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.3%

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: €4,504 EUR|Low: €4,251 EUR|High: €8,355 EUR|Avg: €5,691 EUR|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 9€4,251 EUR
Retailer 1€4,504 EUR
Retailer 4€4,921 EUR
Retailer 12€4,976 EUR
Retailer 2€5,179 EUR
Retailer 10€5,218 EUR
Retailer 7€5,347 EUR
Retailer 3€5,547 EUR
Retailer 6€6,104 EUR
Retailer 11€6,494 EUR
Retailer 8€6,894 EUR
Retailer 5€8,267 EUR

27 data points across 12 retailers

20 retailers€4,251 EUR to €8,267 EUR

B+
Cheapest Retailer
-
€4,251 EUR
HK$37,100 HKD
B+
Retailer 2
-
€4,504 EUR
₹479,175 INR
View
Retailer 3
-
€4,849 EUR
SGD 7,321 SGD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
€4,921 EUR
$5,498 USD
View
B+
Retailer 5
-
€4,976 EUR
SGD 7,513 SGD
View
B
Retailer 6
-
€5,174 EUR
$5,780 USD
View
B
Retailer 7
-
€5,179 EUR
$5,786 USD
View
Final sale: no returns
B+
Retailer 8
-
€5,218 EUR
$5,830 USD
View
B+
Retailer 9
-
€5,347 EUR
£4,704 GBP
View
Retailer 10
-
€5,547 EUR
A$9,534 AUD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
€5,559 EUR
$6,210 USD
View
Retailer 12
-
€5,611 EUR
$6,269 USD
View
Price last confirmed 33 days ago
Retailer 13
-
€5,611 EUR
$6,269 USD
View
Price last confirmed 24 days ago
Retailer 14
-
€5,611 EUR
$6,269 USD
View
Price last confirmed 32 days ago
B
Retailer 15
-
€5,752 EUR
$6,426 USD
View
B
Retailer 16
-
€6,104 EUR
View
Retailer 17
-
€6,474 EUR
$7,233 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
€6,894 EUR
ZAR 124,428 ZAR
View
B
Retailer 19
-
€8,267 EUR
£7,272 GBP
View
Most Expensive
NZ Jewellers
4d7a9480-4f97-4a51-a3ee-da083b02b93d · Sep 28
€9,385 EUR
$10,485 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from €4,251 EURSave up to €4,016 EUR

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
€4,251 EUR