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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 $4,416 USD
HK$34,500 HKD
As of November 2, 2026
Save $4,305 USD (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,901 USD 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 19 retailers as of November 1, 2026, with a 97% 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 (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 2
Current: $4,689 USD|Low: $4,403 USD|High: $8,827 USD|Avg: $5,875 USD|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4$4,416 USD
Retailer 1$4,689 USD
Retailer 3$5,062 USD
Retailer 2$5,221 USD
Retailer 7$5,436 USD
Retailer 8$5,746 USD
Retailer 11$5,952 USD
Retailer 6$6,046 USD
Retailer 5$6,434 USD
Retailer 10$7,273 USD
Retailer 9$8,721 USD

31 data points across 11 retailers

19 retailers$4,416 USD to $8,721 USD

B+
Cheapest Retailer
-
$4,416 USD
HK$34,500 HKD
B+
Retailer 2
-
$4,689 USD
₹446,554 INR
View
B
Retailer 3
-
$5,062 USD
SGD 6,841 SGD
View
B+
Retailer 4
-
$5,221 USD
SGD 7,056 SGD
View
B+
Retailer 5
-
$5,429 USD
View
B+
Retailer 6
-
$5,430 USD
View
B+
Retailer 7
-
$5,436 USD
View
Final sale: no returns
B
Retailer 8
-
$5,686 USD
A$8,748 AUD
View
B+
Retailer 9
-
$5,746 USD
£4,524 GBP
View
Retailer 10
-
$5,920 USD
View
Price last confirmed 17 days ago
Retailer 11
-
$5,920 USD
View
Price last confirmed 15 days ago
Retailer 12
-
$5,920 USD
View
Price last confirmed 16 days ago
Retailer 13
-
$5,952 USD
A$9,157 AUD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$6,046 USD
View
B
Retailer 15
-
$6,434 USD
€6,128 EUR
View
Retailer 16
-
$6,831 USD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$7,273 USD
ZAR 117,501 ZAR
View
B
Retailer 18
-
$8,721 USD
£6,867 GBP
View
Most Expensive
NZ Jewellers
a3545e9c-b1bf-415c-98b7-4ec2331e6c66 · Oct 18
$9,901 USD
View
Price last confirmed 15 days ago
18 more retailers have this diamond
Prices start from $4,416 USDSave up to $4,305 USD

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
$4,416 USD