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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 6431422487

Certificate GIA 6431422487

Diamond specifications and retailer prices

From $7,456 NZD
As of November 6, 2026
Save $7,982 NZD (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,438 NZD at NZ Jewellers · As of November 5, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6431422487. Listed at 18 retailers as of November 5, 2026, with prices from $7,456 to $15,438, a $7,982 spread on the same certified stone. NZ Jewellers lists it at $15,438. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle40.7°
Pavilion angle41.9°
OriginNatural
Grading LabGIA
CertificateGIA 6431422487
Dimensions8.06 × 7.23 × 4.33 mm
L/W Ratio1.11
Top View
8.06 mm7.23 mm1.70 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6431422487
Side View
Table 56.0%Crown 40.7°Girdle: STK-ETKPavilion 41.9°Culet: NoneDepth 59.9%

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: $15,438 NZD|Low: $7,419 NZD|High: $15,438 NZD|Avg: $9,422 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 3$7,456 NZD
Retailer 13$7,461 NZD
Retailer 10$7,728 NZD
Retailer 5$8,179 NZD
Retailer 4$8,343 NZD
Retailer 2$8,478 NZD
Retailer 11$8,725 NZD
Retailer 16$8,861 NZD
Retailer 17$8,861 NZD
Retailer 18$8,861 NZD
Retailer 6$8,933 NZD
Retailer 7$9,052 NZD
Retailer 9$9,133 NZD
Retailer 8$9,362 NZD
Retailer 15$10,225 NZD
Retailer 12$10,811 NZD
Retailer 14$14,074 NZD
NZ Jewellers$15,438 NZD

32 data points across 18 retailers

18 retailers$7,456 NZD to $15,438 NZD

B+
Cheapest Retailer
-
$7,456 NZD
B+
Retailer 2
-
$7,461 NZD
View
B+
Retailer 3
-
$7,728 NZD
View
B+
Retailer 4
-
$8,179 NZD
View
Final sale: no returns
B+
Retailer 5
-
$8,343 NZD
View
B+
Retailer 6
-
$8,478 NZD
View
B+
Retailer 7
-
$8,725 NZD
View
B
Retailer 8
-
$8,861 NZD
View
B
Retailer 9
-
$8,861 NZD
View
Retailer 10
-
$8,861 NZD
View
Price last confirmed 13 days ago
Retailer 11
-
$8,933 NZD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$9,052 NZD
View
B
Retailer 13
-
$9,133 NZD
View
B
Retailer 14
-
$9,362 NZD
View
B
Retailer 15
-
$10,225 NZD
View
B
Retailer 16
-
$10,811 NZD
View
B
Retailer 17
-
$14,074 NZD
View
Most Expensive
C
NZ Jewellers
9be0e4a2-93b6-416f-97c9-bfaaaf15adb7 · Nov 5
$15,438 NZD
$8,558 USD
View
17 more retailers have this diamond
Prices start from $7,456 NZDSave up to $7,982 NZD

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
$7,456 NZD