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Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1528839139

Certificate GIA 1528839139

Diamond specifications and retailer prices

From $7,659 AUD
$5,380 USD
As of November 1, 2026
Save $9,497 AUD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $17,156 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1528839139. Listed at 25 retailers as of October 30, 2026, with prices from $7,659 to $17,156, a $9,497 spread on the same certified stone. NZ Jewellers lists it at $17,156. 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

1.60
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1528839139
Dimensions7.40 × 7.46 × 4.67 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.40 mm7.46 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528839139
Side View
Table 56.0%Crown 35.5°Girdle: Medium to Slightly ThickPavilion 40.8°Culet: NoneDepth 62.9%

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 1
Current: $17,156 AUD|Low: $7,659 AUD|High: $17,156 AUD|Avg: $9,974 AUD
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
November 2, 2026
Retailer 3$7,659 AUD
Retailer 6$7,790 AUD
Retailer 7$7,878 AUD
Retailer 12$8,105 AUD
Retailer 23$8,113 AUD
Retailer 8$8,214 AUD
Retailer 14$8,577 AUD
Retailer 4$8,579 AUD
Retailer 25$8,634 AUD
Retailer 18$8,890 AUD
Retailer 15$9,100 AUD
Retailer 9$9,149 AUD
Retailer 10$9,293 AUD
Retailer 5$9,436 AUD
Retailer 16$9,438 AUD
Retailer 22$9,464 AUD
Retailer 13$9,771 AUD
Retailer 24$9,956 AUD
Retailer 17$10,149 AUD
Retailer 2$10,550 AUD
Retailer 11$10,723 AUD
Retailer 19$10,927 AUD
Retailer 21$12,603 AUD
Retailer 20$14,296 AUD
NZ Jewellers$17,156 AUD

31 data points across 25 retailers

25 retailers$7,659 AUD to $17,156 AUD

A
Cheapest Retailer
-
$7,659 AUD
$5,380 USD
A
Retailer 2
-
$7,790 AUD
$5,472 USD
View
A
Retailer 3
-
$7,878 AUD
$5,534 USD
View
A
Retailer 4
-
$8,105 AUD
$5,693 USD
View
A
Retailer 5
-
$8,113 AUD
$5,699 USD
View
B+
Retailer 6
-
$8,214 AUD
$5,770 USD
View
B+
Retailer 7
-
$8,577 AUD
$6,025 USD
View
Final sale: no returns
B+
Retailer 8
-
$8,579 AUD
$6,026 USD
View
A
Retailer 9
-
$8,634 AUD
$6,065 USD
View
B+
Retailer 10
-
$8,890 AUD
CA$8,673 CAD
View
B+
Retailer 11
-
$9,100 AUD
$6,392 USD
View
B+
Retailer 12
-
$9,149 AUD
$6,427 USD
View
B+
Retailer 13
-
$9,293 AUD
$6,528 USD
View
B+
Retailer 14
-
$9,436 AUD
$6,628 USD
View
Retailer 15
-
$9,438 AUD
$6,630 USD
View
Price last confirmed 18 days ago
B+
Retailer 16
-
$9,464 AUD
$6,648 USD
View
B+
Retailer 17
-
$9,771 AUD
£5,404 GBP
View
Retailer 18
-
$9,956 AUD
View
Price last confirmed 11 days ago
B+
Retailer 19
-
$10,149 AUD
$7,129 USD
View
B+
Retailer 20
-
$10,550 AUD
£5,835 GBP
View
B
Retailer 21
-
$10,723 AUD
$7,532 USD
View
B+
Retailer 22
-
$10,927 AUD
€7,310 EUR
View
B
Retailer 23
-
$12,603 AUD
ZAR 143,021 ZAR
View
B
Retailer 24
-
$14,296 AUD
£7,907 GBP
View
Most Expensive
B
NZ Jewellers
2943a18f-7cc3-4352-af1e-c57bdbc3520e · Oct 30
$17,156 AUD
$12,051 USD
View
24 more retailers have this diamond
Prices start from $7,659 AUDSave up to $9,497 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
1.60ct Round
$7,659 AUD