Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6521858903

Certificate GIA 6521858903

Diamond specifications and retailer prices

From $4,257 NZD
As of November 6, 2026
Save $4,968 NZD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,638 NZD at NZ Jewellers · As of September 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521858903. Listed at 21 retailers as of November 4, 2026, with a 117% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521858903
Dimensions6.46 × 6.42 × 3.88 mm
L/W Ratio1.01
Top View
6.46 mm6.42 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521858903
Side View
Table 61.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.2%

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: $4,412 NZD|Low: $4,257 NZD|High: $9,364 NZD|Avg: $6,237 NZD|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$4,257 NZD
Retailer 1$4,412 NZD
Retailer 10$5,057 NZD
Retailer 2$5,105 NZD
Retailer 6$5,335 NZD
Retailer 4$5,689 NZD
Retailer 3$5,917 NZD
Retailer 5$6,425 NZD
Retailer 7$9,225 NZD
Retailer 9$9,330 NZD

36 data points across 10 retailers

21 retailers$4,257 NZD to $9,225 NZD

A
Cheapest Retailer
-
$4,257 NZD
A
Retailer 2
-
$4,412 NZD
View
A
Retailer 3
-
$5,057 NZD
View
A
Retailer 4
-
$5,105 NZD
View
Final sale: no returns
A
Retailer 5
-
$5,223 NZD
View
A
Retailer 6
-
$5,335 NZD
View
Retailer 7
-
$5,532 NZD
View
Price last confirmed 44 days ago
Retailer 8
-
$5,532 NZD
View
Price last confirmed 25 days ago
Retailer 9
-
$5,532 NZD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$5,604 NZD
View
B+
Retailer 11
-
$5,689 NZD
View
Retailer 12
-
$5,746 NZD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$5,787 NZD
View
B+
Retailer 14
-
$5,917 NZD
View
Retailer 15
-
$6,383 NZD
View
Price last confirmed 45 days ago
Retailer 16
-
$6,383 NZD
View
Price last confirmed 28 days ago
B+
Retailer 17
-
$6,425 NZD
View
B
Retailer 18
-
$9,225 NZD
View
Retailer 19
-
$9,330 NZD
View
Price last confirmed 9 days ago
Retailer 20
-
$9,638 NZD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
648891c1-c419-4a43-b1f7-bc6f347ebb64 · Sep 26
$9,638 NZD
$5,418 USD
View
Price last confirmed 40 days ago
20 more retailers have this diamond
Prices start from $4,257 NZDSave up to $4,968 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
$4,257 NZD