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Round|Natural|GIA

1.70ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2556520738

Certificate GIA 2556520738

Diamond specifications and retailer prices

From $7,966 AUD
$5,596 USD
As of October 31, 2026
Save $7,538 AUD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $17,882 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556520738. Listed at 18 retailers as of October 26, 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556520738
Dimensions7.71 × 7.75 × 4.69 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Pinpoint, Natural
Top View
7.71 mm7.75 mm1.70 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2556520738
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $14,636 AUD|Low: $7,047 AUD|High: $15,504 AUD|Avg: $10,437 AUD|-1.9%
Retailer 1
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 1, 2026
Retailer 10$7,966 AUD
Retailer 13$8,065 AUD
Retailer 14$8,297 AUD
Retailer 2$8,306 AUD
Retailer 15$8,410 AUD
Retailer 11$8,611 AUD
Retailer 12$8,781 AUD
Retailer 5$8,940 AUD
Retailer 9$9,835 AUD
Retailer 7$9,837 AUD
Retailer 3$9,863 AUD
Retailer 4$9,867 AUD
Retailer 8$11,194 AUD
Retailer 1$14,636 AUD
Retailer 6$15,504 AUD

37 data points across 15 retailers

18 retailers$7,966 AUD to $15,504 AUD

A
Cheapest Retailer
-
$7,966 AUD
$5,596 USD
A
Retailer 2
-
$8,065 AUD
$5,665 USD
View
A
Retailer 3
-
$8,297 AUD
$5,828 USD
View
A
Retailer 4
-
$8,306 AUD
$5,834 USD
View
A
Retailer 5
-
$8,410 AUD
$5,907 USD
View
A
Retailer 6
-
$8,611 AUD
View
B+
Retailer 7
-
$8,781 AUD
$6,168 USD
View
Final sale: no returns
Retailer 8
-
$9,686 AUD
$6,804 USD
View
Price last confirmed 31 days ago
Retailer 9
-
$9,834 AUD
$6,908 USD
View
Price last confirmed 33 days ago
B+
Retailer 10
-
$9,835 AUD
£5,440 GBP
View
Retailer 11
-
$9,837 AUD
$6,910 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$9,863 AUD
$6,928 USD
View
B+
Retailer 13
-
$9,867 AUD
$6,931 USD
View
Retailer 14
-
$11,177 AUD
$7,851 USD
View
Price last confirmed 33 days ago
B+
Retailer 15
-
$11,194 AUD
€7,489 EUR
View
B
Retailer 16
-
$14,636 AUD
£8,095 GBP
View
B
Retailer 17
-
$15,504 AUD
$10,891 USD
View
Most Expensive
NZ Jewellers
0e9bb4a0-df40-447b-bf38-7b3545a180d1 · Sep 28
$17,882 AUD
$12,561 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from $7,966 AUDSave up to $7,538 AUD

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.

A
1.70ct Round
$7,966 AUD