CaratHunter
Plans
Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2557652255

Certificate GIA 2557652255

Diamond specifications and retailer prices

From $5,328 NZD
As of November 6, 2026
Save $7,059 NZD (57%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $12,904 NZD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557652255. Listed at 24 retailers as of November 2, 2026, with a 132% 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

1.00
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557652255
Dimensions6.36 × 6.42 × 4.01 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
6.36 mm6.42 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557652255
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°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 6
Current: $5,328 NZD|Low: $5,328 NZD|High: $12,520 NZD|Avg: $7,924 NZD|-5.1%
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
November 6, 2026
Retailer 1$5,328 NZD
Retailer 13$5,351 NZD
Retailer 4$5,943 NZD
Retailer 3$6,290 NZD
Retailer 5$6,598 NZD
Retailer 8$6,733 NZD
Retailer 2$6,813 NZD
Retailer 7$6,840 NZD
Retailer 9$7,153 NZD
Retailer 14$7,409 NZD
Retailer 10$7,849 NZD
Retailer 12$8,167 NZD
Retailer 11$8,726 NZD
Retailer 6$12,386 NZD

25 data points across 14 retailers

24 retailers$5,328 NZD to $12,386 NZD

A
Cheapest Retailer
-
$5,328 NZD
A
Retailer 2
-
$5,351 NZD
View
B+
Retailer 3
-
$5,943 NZD
View
B+
Retailer 4
-
$6,290 NZD
View
B+
Retailer 5
-
$6,598 NZD
View
Final sale: no returns
B+
Retailer 6
-
$6,733 NZD
View
B+
Retailer 7
-
$6,813 NZD
View
B+
Retailer 8
-
$6,840 NZD
View
B+
Retailer 9
-
$6,993 NZD
View
Retailer 10
-
$7,149 NZD
View
Price last confirmed 43 days ago
Retailer 11
-
$7,149 NZD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$7,153 NZD
View
Retailer 13
-
$7,407 NZD
View
Price last confirmed 29 days ago
Retailer 14
-
$7,407 NZD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$7,409 NZD
View
B+
Retailer 16
-
$7,849 NZD
View
Retailer 17
-
$7,941 NZD
View
Price last confirmed 33 days ago
B+
Retailer 18
-
$8,167 NZD
View
Retailer 19
-
$8,546 NZD
View
Price last confirmed 45 days ago
Retailer 20
-
$8,546 NZD
View
Price last confirmed 33 days ago
B+
Retailer 21
-
$8,726 NZD
View
B
Retailer 22
-
$12,386 NZD
View
Retailer 23
-
$12,454 NZD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
c622d397-570c-4952-9c80-b0d5219df204 · Oct 3
$12,904 NZD
$7,254 USD
View
Price last confirmed 34 days ago
23 more retailers have this diamond
Prices start from $5,328 NZDSave up to $7,059 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
1.00ct Round
$5,328 NZD