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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1559659348

Certificate GIA 1559659348

Diamond specifications and retailer prices

From €3,955 EUR
As of November 6, 2026
Save €3,774 EUR (49%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €8,868 EUR at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.7ct natural heart diamond

This 1.7ct natural heart 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 stated by the retailer rather than the lab and certified by GIA 1559659348. Listed at 20 retailers as of November 6, 2026, with a 95% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559659348
Dimensions7.66 × 8.51 × 4.70 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle, Natural
Top View
7.66 mm8.51 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559659348
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 55.3%

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 6
Current: €5,601 EUR|Low: €3,944 EUR|High: €7,905 EUR|Avg: €5,285 EUR
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 7, 2026
Retailer 11€3,955 EUR
Retailer 7€4,165 EUR
Retailer 4€4,534 EUR
Retailer 10€4,702 EUR
Retailer 2€4,869 EUR
Retailer 6€5,095 EUR
Retailer 3€5,330 EUR
Retailer 12€5,414 EUR
Retailer 1€5,601 EUR
Retailer 8€5,731 EUR
Retailer 9€6,436 EUR
Retailer 5€7,730 EUR

29 data points across 12 retailers

20 retailers€3,955 EUR to €7,730 EUR

B+
Cheapest Retailer
-
€3,955 EUR
B+
Retailer 2
-
€4,165 EUR
View
Retailer 3
-
€4,534 EUR
View
Price last confirmed 11 days ago
B+
Retailer 4
-
€4,702 EUR
View
B+
Retailer 5
-
€4,863 EUR
View
B+
Retailer 6
-
€4,863 EUR
View
B+
Retailer 7
-
€4,869 EUR
View
Final sale: no returns
B
Retailer 8
-
€5,093 EUR
View
B+
Retailer 9
-
€5,095 EUR
View
Retailer 10
-
€5,302 EUR
View
Price last confirmed 22 days ago
Retailer 11
-
€5,302 EUR
View
Price last confirmed 20 days ago
Retailer 12
-
€5,302 EUR
View
Price last confirmed 22 days ago
Retailer 13
-
€5,330 EUR
View
Price last confirmed 19 days ago
B
Retailer 14
-
€5,414 EUR
View
B
Retailer 15
-
€5,601 EUR
View
B
Retailer 16
-
€5,731 EUR
View
Retailer 17
-
€6,118 EUR
View
Price last confirmed 19 days ago
B
Retailer 18
-
€6,436 EUR
View
B
Retailer 19
-
€7,730 EUR
View
Most Expensive
NZ Jewellers
a3545e9c-b1bf-415c-98b7-4ec2331e6c66 · Oct 18
€8,868 EUR
$9,901 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from €3,955 EURSave up to €3,774 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 Heart
€3,955 EUR