Round|Natural|GIA

1.70ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1559478791

Certificate GIA 1559478791

Diamond specifications and retailer prices

From $7,117 AUD
$4,999 USD
As of October 31, 2026
Save $7,834 AUD (52%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $17,245 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 1559478791. Listed at 24 retailers as of October 26, 2026, with a 110% 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
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559478791
Dimensions7.68 × 4.72 × 4.72 mm
L/W Ratio1.63
Culet sizeNone
Top View
7.68 mm4.72 mm1.70 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559478791
Side View
Table 59.0%Crown 33°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.3%

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: $10,999 AUD|Low: $6,796 AUD|High: $14,951 AUD|Avg: $9,835 AUD|+3.5%
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
Retailer 16
Retailer 17
November 1, 2026
Retailer 4$7,918 AUD
Retailer 5$8,146 AUD
Retailer 13$8,156 AUD
Retailer 6$8,257 AUD
Retailer 15$8,621 AUD
Retailer 17$8,623 AUD
Retailer 2$9,196 AUD
Retailer 8$9,466 AUD
Retailer 12$9,514 AUD
Retailer 16$9,698 AUD
Retailer 11$9,822 AUD
Retailer 3$10,193 AUD
Retailer 7$10,193 AUD
Retailer 9$10,535 AUD
Retailer 1$10,999 AUD
Retailer 10$14,370 AUD
Retailer 14$14,951 AUD

34 data points across 17 retailers

24 retailers$7,117 AUD to $14,951 AUD

A
Cheapest Retailer
-
$7,117 AUD
$4,999 USD
A
Retailer 2
-
$7,918 AUD
$5,562 USD
View
A
Retailer 3
-
$8,146 AUD
$5,722 USD
View
A
Retailer 4
-
$8,156 AUD
$5,729 USD
View
A
Retailer 5
-
$8,257 AUD
$5,800 USD
View
B+
Retailer 6
-
$8,621 AUD
$6,056 USD
View
Final sale: no returns
B+
Retailer 7
-
$9,196 AUD
$6,460 USD
View
Retailer 8
-
$9,342 AUD
$6,562 USD
View
Price last confirmed 51 days ago
Retailer 9
-
$9,342 AUD
$6,562 USD
View
Price last confirmed 34 days ago
Retailer 10
-
$9,466 AUD
$6,649 USD
View
Price last confirmed 9 days ago
Retailer 11
-
$9,485 AUD
$6,663 USD
View
Price last confirmed 33 days ago
B+
Retailer 12
-
$9,514 AUD
$6,683 USD
View
B+
Retailer 13
-
$9,698 AUD
$6,812 USD
View
B+
Retailer 14
-
$9,822 AUD
£5,433 GBP
View
B+
Retailer 15
-
$10,193 AUD
$7,160 USD
View
B+
Retailer 16
-
$10,193 AUD
$7,160 USD
View
B+
Retailer 17
-
$10,535 AUD
$7,400 USD
View
Retailer 18
-
$10,778 AUD
$7,571 USD
View
Price last confirmed 33 days ago
Retailer 19
-
$10,778 AUD
$7,571 USD
View
Price last confirmed 52 days ago
B+
Retailer 20
-
$10,999 AUD
€7,358 EUR
View
B
Retailer 21
-
$14,370 AUD
£7,948 GBP
View
B
Retailer 22
-
$14,951 AUD
$10,502 USD
View
Retailer 23
-
$17,245 AUD
$12,114 USD
View
Price last confirmed 52 days ago
Most Expensive
NZ Jewellers
24bb874d-fc3e-4e61-9f42-8d6bc48b80c1 · Sep 28
$17,245 AUD
$12,114 USD
View
Price last confirmed 35 days ago
23 more retailers have this diamond
Prices start from $7,117 AUDSave up to $7,834 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
$7,117 AUD