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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555614721

Certificate GIA 1555614721

Diamond specifications and retailer prices

From $4,091 NZD
As of November 6, 2026
Save $6,359 NZD (61%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,450 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555614721. Listed at 21 retailers as of November 5, 2026, with prices from $4,091 to $10,450, a $6,359 spread on the same certified stone. NZ Jewellers lists it at $10,450. 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

1.05
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555614721
Dimensions6.51 × 6.53 × 4.04 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Cloud
Top View
6.51 mm6.53 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555614721
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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 6
Current: $10,450 NZD|Low: $3,831 NZD|High: $10,450 NZD|Avg: $5,574 NZD
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
November 6, 2026
Retailer 7$4,091 NZD
Retailer 5$4,095 NZD
Retailer 6$4,180 NZD
Retailer 14$4,528 NZD
Retailer 16$4,528 NZD
Retailer 15$4,737 NZD
Retailer 9$4,779 NZD
Retailer 4$5,136 NZD
Retailer 3$5,226 NZD
Retailer 2$5,228 NZD
Retailer 8$5,599 NZD
Retailer 13$5,834 NZD
Retailer 10$5,886 NZD
Retailer 11$6,101 NZD
Retailer 12$8,734 NZD
NZ Jewellers$10,450 NZD

31 data points across 16 retailers

21 retailers$4,091 NZD to $10,450 NZD

A
Cheapest Retailer
-
$4,091 NZD
A
Retailer 2
-
$4,095 NZD
View
A
Retailer 3
-
$4,180 NZD
View
Final sale: no returns
A
Retailer 4
-
$4,360 NZD
View
A
Retailer 5
-
$4,528 NZD
View
Retailer 6
-
$4,528 NZD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$4,605 NZD
View
B+
Retailer 8
-
$4,737 NZD
View
B+
Retailer 9
-
$4,739 NZD
View
B+
Retailer 10
-
$4,779 NZD
View
B+
Retailer 11
-
$5,136 NZD
View
B+
Retailer 12
-
$5,226 NZD
View
B+
Retailer 13
-
$5,228 NZD
View
B+
Retailer 14
-
$5,592 NZD
View
Retailer 15
-
$5,599 NZD
View
Price last confirmed 30 days ago
B+
Retailer 16
-
$5,706 NZD
View
B+
Retailer 17
-
$5,834 NZD
View
B+
Retailer 18
-
$5,886 NZD
View
B
Retailer 19
-
$6,101 NZD
View
B
Retailer 20
-
$8,734 NZD
View
Most Expensive
B
NZ Jewellers
e8e9a1de-dcce-42c5-84ec-6cec898aa17c · Nov 5
$10,450 NZD
$5,793 USD
View
20 more retailers have this diamond
Prices start from $4,091 NZDSave up to $6,359 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.

A
1.05ct Round
$4,091 NZD