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Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1557994945

Certificate GIA 1557994945

Diamond specifications and retailer prices

From $8,288 AUD
$5,822 USD
As of November 2, 2026
Save $6,732 AUD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,020 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 1557994945. Listed at 14 retailers as of October 30, 2026, with prices from $8,288 to $15,020, a $6,732 spread on the same certified stone. NZ Jewellers lists it at $15,020. 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 angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1557994945
Dimensions7.44 × 7.48 × 4.68 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.44 mm7.48 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557994945
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 2
Current: $15,020 AUD|Low: $7,598 AUD|High: $15,020 AUD|Avg: $9,988 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
November 2, 2026
Retailer 5$8,288 AUD
Retailer 6$8,487 AUD
Retailer 3$8,570 AUD
Retailer 4$8,878 AUD
Retailer 10$8,980 AUD
Retailer 12$8,980 AUD
Retailer 13$8,980 AUD
Retailer 2$9,236 AUD
Retailer 7$9,771 AUD
Retailer 11$10,362 AUD
Retailer 9$11,034 AUD
Retailer 8$13,231 AUD
NZ Jewellers$15,020 AUD

30 data points across 13 retailers

14 retailers$8,288 AUD to $15,020 AUD

A
Cheapest Retailer
-
$8,288 AUD
$5,822 USD
Final sale: no returns
A
Retailer 2
-
$8,487 AUD
£4,694 GBP
View
B+
Retailer 3
-
$8,570 AUD
$6,020 USD
View
Retailer 4
-
$8,878 AUD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
$8,980 AUD
$6,308 USD
View
B+
Retailer 6
-
$8,980 AUD
$6,308 USD
View
B+
Retailer 7
-
$8,980 AUD
$6,308 USD
View
B+
Retailer 8
-
$9,236 AUD
£5,109 GBP
View
B+
Retailer 9
-
$9,325 AUD
$6,550 USD
View
B+
Retailer 10
-
$9,771 AUD
€6,537 EUR
View
B+
Retailer 11
-
$10,362 AUD
$7,279 USD
View
B+
Retailer 12
-
$11,034 AUD
ZAR 125,215 ZAR
View
B
Retailer 13
-
$13,231 AUD
£7,318 GBP
View
Most Expensive
B
NZ Jewellers
a88faf37-89a2-4091-8991-4ed7a9662110 · Oct 30
$15,020 AUD
$10,551 USD
View
13 more retailers have this diamond
Prices start from $8,288 AUDSave up to $6,732 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
$8,288 AUD