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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 7548576551

Certificate GIA 7548576551

Diamond specifications and retailer prices

From $7,735 NZD
As of November 6, 2026
Save $8,460 NZD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,142 NZD 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 7548576551. Listed at 20 retailers as of November 4, 2026, with a 109% 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7548576551
Dimensions7.11 × 8.08 × 4.98 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Needle
Top View
7.11 mm8.08 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7548576551
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.7%

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: $17,142 NZD|Low: $7,688 NZD|High: $17,142 NZD|Avg: $10,953 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
November 6, 2026
Retailer 14$7,735 NZD
Retailer 2$8,139 NZD
Retailer 11$9,184 NZD
Retailer 3$9,409 NZD
Retailer 8$9,757 NZD
Retailer 9$9,790 NZD
Retailer 13$10,156 NZD
Retailer 5$10,250 NZD
Retailer 7$10,250 NZD
Retailer 4$10,304 NZD
Retailer 15$10,473 NZD
Retailer 6$11,826 NZD
Retailer 10$12,440 NZD
Retailer 12$16,195 NZD
NZ Jewellers$17,142 NZD

27 data points across 15 retailers

20 retailers$7,735 NZD to $16,195 NZD

B+
Cheapest Retailer
-
$7,735 NZD
B+
Retailer 2
-
$8,139 NZD
View
B+
Retailer 3
-
$9,184 NZD
View
B+
Retailer 4
-
$9,409 NZD
View
Final sale: no returns
B
Retailer 5
-
$9,496 NZD
View
B
Retailer 6
-
$9,498 NZD
View
B+
Retailer 7
-
$9,757 NZD
View
B+
Retailer 8
-
$9,790 NZD
View
Retailer 9
-
$9,876 NZD
View
Price last confirmed 23 days ago
B+
Retailer 10
-
$9,952 NZD
View
B+
Retailer 11
-
$10,156 NZD
View
Retailer 12
-
$10,250 NZD
View
Price last confirmed 22 days ago
Retailer 13
-
$10,250 NZD
View
Price last confirmed 20 days ago
Retailer 14
-
$10,250 NZD
View
Price last confirmed 22 days ago
Retailer 15
-
$10,304 NZD
View
Price last confirmed 20 days ago
B
Retailer 16
-
$10,473 NZD
View
Retailer 17
-
$11,826 NZD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$12,440 NZD
View
B
Retailer 19
-
$16,195 NZD
View
Most Expensive
NZ Jewellers
2342f5bb-d5f6-4248-bb12-cf09a4a2d8d1 · Oct 18
$17,142 NZD
$9,503 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from $7,735 NZDSave up to $8,460 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
$7,735 NZD