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Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6555649011

Certificate GIA 6555649011

Diamond specifications and retailer prices

From $10,623 NZD
$5,987 USD
As of November 1, 2026
Save $8,245 NZD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,832 NZD at NZ Jewellers · As of September 19, 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 6555649011. Listed at 14 retailers as of October 26, 2026, with a 78% 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

1.60
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555649011
Dimensions7.44 × 7.40 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.44 mm7.40 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555649011
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $12,186 NZD|Low: $8,980 NZD|High: $29,512 NZD|Avg: $11,940 NZD|+8.6%
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
Retailer 18
November 2, 2026
Retailer 2$8,980 NZD
Retailer 4$8,994 NZD
Retailer 3$9,469 NZD
Retailer 5$9,789 NZD
Retailer 9$10,100 NZD
Retailer 6$10,495 NZD
Retailer 18$10,623 NZD
Retailer 7$10,841 NZD
Retailer 14$10,892 NZD
Retailer 15$11,150 NZD
Retailer 10$11,485 NZD
Retailer 13$12,007 NZD
Retailer 1$12,186 NZD
Retailer 16$12,436 NZD
Retailer 11$13,388 NZD
Retailer 8$14,035 NZD
Retailer 12$18,056 NZD
Retailer 17$18,868 NZD

28 data points across 18 retailers

14 retailers$10,623 NZD to $18,868 NZD

Retailer 1
-
$8,994 NZD
HK$39,600 HKD
Price last confirmed 41 days ago
Retailer 2
-
$9,789 NZD
€5,255 EUR
View
Price last confirmed 41 days ago
B+
Retailer 3
-
$10,623 NZD
$5,987 USD
View
Retailer 4
-
$10,841 NZD
$6,110 USD
View
Price last confirmed 41 days ago
B+
Retailer 5
-
$10,892 NZD
CA$8,526 CAD
View
B+
Retailer 6
-
$11,150 NZD
$6,284 USD
View
B+
Retailer 7
-
$11,485 NZD
A$9,958 AUD
View
B+
Retailer 8
-
$12,007 NZD
$6,767 USD
View
B+
Retailer 9
-
$12,186 NZD
£5,408 GBP
View
B+
Retailer 10
-
$12,436 NZD
$7,009 USD
View
B+
Retailer 11
-
$13,388 NZD
€7,186 EUR
View
B
Retailer 12
-
$18,056 NZD
£8,013 GBP
View
B
Retailer 13
-
$18,868 NZD
$10,634 USD
View
Most Expensive
NZ Jewellers
809800c8-ddf7-4a6e-b10a-11a7a278cb73 · Sep 19
$20,832 NZD
$11,741 USD
View
Price last confirmed 43 days ago
13 more retailers have this diamond
Prices start from $10,623 NZDSave up to $8,245 NZD

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.

B+
1.60ct Round
$10,623 NZD