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Radiant|Natural|GIA

1.70ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 1559192012

Certificate GIA 1559192012

Diamond specifications and retailer prices

From $6,688 AUD
As of November 6, 2026
Save $6,541 AUD (49%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $15,440 AUD at NZ Jewellers · As of October 11, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded I 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 1559192012. Listed at 21 retailers as of November 1, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559192012
Dimensions7.92 × 6.10 × 4.25 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle, Extra Facet
Top View
7.92 mm6.10 mm1.70 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559192012
Side View
Table 71.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.7%

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: Nov 6
Current: $9,479 AUD|Low: $6,669 AUD|High: $13,803 AUD|Avg: $8,980 AUD
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
November 7, 2026
Retailer 11$6,688 AUD
Retailer 7$7,063 AUD
Retailer 3$7,679 AUD
Retailer 4$7,881 AUD
Retailer 10$8,192 AUD
Retailer 13$8,242 AUD
Retailer 6$8,481 AUD
Retailer 12$9,156 AUD
Retailer 5$9,175 AUD
Retailer 1$9,479 AUD
Retailer 8$9,699 AUD
Retailer 9$10,894 AUD
Retailer 2$13,228 AUD

28 data points across 13 retailers

21 retailers$6,688 AUD to $13,228 AUD

A
Cheapest Retailer
-
$6,688 AUD
A
Retailer 2
-
$7,063 AUD
View
Retailer 3
-
$7,679 AUD
View
Price last confirmed 11 days ago
B+
Retailer 4
-
$7,881 AUD
View
A
Retailer 5
-
$8,192 AUD
View
A
Retailer 6
-
$8,242 AUD
View
Final sale: no returns
B+
Retailer 7
-
$8,473 AUD
View
B+
Retailer 8
-
$8,478 AUD
View
A
Retailer 9
-
$8,481 AUD
View
B+
Retailer 10
-
$9,127 AUD
View
B+
Retailer 11
-
$9,156 AUD
View
Retailer 12
-
$9,175 AUD
View
Price last confirmed 28 days ago
Retailer 13
-
$9,232 AUD
View
Price last confirmed 26 days ago
Retailer 14
-
$9,232 AUD
View
Price last confirmed 28 days ago
Retailer 15
-
$9,283 AUD
View
Price last confirmed 38 days ago
Retailer 16
-
$9,479 AUD
View
B+
Retailer 17
-
$9,699 AUD
View
Retailer 18
-
$10,652 AUD
View
Price last confirmed 26 days ago
B+
Retailer 19
-
$10,894 AUD
View
B
Retailer 20
-
$13,228 AUD
View
Most Expensive
NZ Jewellers
46cc14e8-b203-4d3a-873b-62a06dc8972d · Oct 11
$15,440 AUD
$10,609 USD
View
Price last confirmed 26 days ago
20 more retailers have this diamond
Prices start from $6,688 AUDSave up to $6,541 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 Radiant
$6,688 AUD