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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 HK$34,610 HKD
As of November 6, 2026
Save HK$33,027 HKD (49%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$77,598 HKD 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: HK$49,015 HKD|Low: HK$34,508 HKD|High: HK$69,173 HKD|Avg: HK$46,244 HKD
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 11HK$34,610 HKD
Retailer 7HK$36,444 HKD
Retailer 4HK$39,673 HKD
Retailer 10HK$41,146 HKD
Retailer 2HK$42,604 HKD
Retailer 6HK$44,587 HKD
Retailer 3HK$46,640 HKD
Retailer 12HK$47,377 HKD
Retailer 1HK$49,015 HKD
Retailer 8HK$50,152 HKD
Retailer 9HK$56,320 HKD
Retailer 5HK$67,637 HKD

29 data points across 12 retailers

20 retailersHK$34,610 HKD to HK$67,637 HKD

B+
Cheapest Retailer
-
HK$34,610 HKD
B+
Retailer 2
-
HK$36,444 HKD
View
Retailer 3
-
HK$39,673 HKD
View
Price last confirmed 11 days ago
B+
Retailer 4
-
HK$41,146 HKD
View
B+
Retailer 5
-
HK$42,549 HKD
View
B+
Retailer 6
-
HK$42,557 HKD
View
B+
Retailer 7
-
HK$42,604 HKD
View
Final sale: no returns
B
Retailer 8
-
HK$44,563 HKD
View
B+
Retailer 9
-
HK$44,587 HKD
View
Retailer 10
-
HK$46,397 HKD
View
Price last confirmed 22 days ago
Retailer 11
-
HK$46,397 HKD
View
Price last confirmed 20 days ago
Retailer 12
-
HK$46,397 HKD
View
Price last confirmed 22 days ago
Retailer 13
-
HK$46,640 HKD
View
Price last confirmed 19 days ago
B
Retailer 14
-
HK$47,377 HKD
View
B
Retailer 15
-
HK$49,015 HKD
View
B
Retailer 16
-
HK$50,152 HKD
View
Retailer 17
-
HK$53,537 HKD
View
Price last confirmed 19 days ago
B
Retailer 18
-
HK$56,320 HKD
View
B
Retailer 19
-
HK$67,637 HKD
View
Most Expensive
NZ Jewellers
a3545e9c-b1bf-415c-98b7-4ec2331e6c66 · Oct 18
HK$77,598 HKD
$9,901 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from HK$34,610 HKDSave up to HK$33,027 HKD

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
HK$34,610 HKD