CaratHunter
Plans
Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1559659348

Certificate GIA 1559659348

Diamond specifications and retailer prices

From $5,660 SGD
As of November 6, 2026
Save $5,433 SGD (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,689 SGD 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 4, 2026, with a 96% 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: $5,959 SGD|Low: $5,643 SGD|High: $11,311 SGD|Avg: $7,559 SGD|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$5,660 SGD
Retailer 1$5,959 SGD
Retailer 3$6,487 SGD
Retailer 7$6,728 SGD
Retailer 11$6,967 SGD
Retailer 5$7,247 SGD
Retailer 2$7,627 SGD
Retailer 10$7,747 SGD
Retailer 4$8,201 SGD
Retailer 6$9,210 SGD
Retailer 8$11,092 SGD

29 data points across 11 retailers

19 retailers$5,660 SGD to $11,092 SGD

B+
Cheapest Retailer
-
$5,660 SGD
B+
Retailer 2
-
$5,959 SGD
View
Retailer 3
-
$6,487 SGD
View
Price last confirmed 11 days ago
B
Retailer 4
-
$6,728 SGD
View
B+
Retailer 5
-
$6,958 SGD
View
B+
Retailer 6
-
$6,959 SGD
View
B+
Retailer 7
-
$6,967 SGD
View
Final sale: no returns
B+
Retailer 8
-
$7,247 SGD
View
B
Retailer 9
-
$7,287 SGD
View
Retailer 10
-
$7,587 SGD
View
Price last confirmed 22 days ago
Retailer 11
-
$7,587 SGD
View
Price last confirmed 20 days ago
Retailer 12
-
$7,587 SGD
View
Price last confirmed 22 days ago
Retailer 13
-
$7,627 SGD
View
Price last confirmed 19 days ago
B
Retailer 14
-
$7,747 SGD
View
B
Retailer 15
-
$8,201 SGD
View
Retailer 16
-
$8,755 SGD
View
Price last confirmed 19 days ago
B
Retailer 17
-
$9,210 SGD
View
B
Retailer 18
-
$11,092 SGD
View
Most Expensive
NZ Jewellers
a3545e9c-b1bf-415c-98b7-4ec2331e6c66 · Oct 18
$12,689 SGD
$9,901 USD
View
Price last confirmed 19 days ago
18 more retailers have this diamond
Prices start from $5,660 SGDSave up to $5,433 SGD

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
$5,660 SGD