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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6525508015

Certificate GIA 6525508015

Diamond specifications and retailer prices

From $3,892 NZD
As of November 6, 2026
Save $4,949 NZD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,579 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525508015. Listed at 20 retailers as of November 4, 2026, with a 127% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6525508015
Dimensions6.40 × 6.37 × 3.91 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525508015
Side View
Table 59.0%Crown 36°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 61.2%

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: $4,040 NZD|Low: $3,892 NZD|High: $8,971 NZD|Avg: $5,933 NZD|-2.6%
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$3,892 NZD
Retailer 1$4,040 NZD
Retailer 6$4,534 NZD
Retailer 10$4,662 NZD
Retailer 2$4,671 NZD
Retailer 4$5,324 NZD
Retailer 3$5,406 NZD
Retailer 5$5,876 NZD
Retailer 7$8,841 NZD
Retailer 9$8,946 NZD

34 data points across 10 retailers

20 retailers$3,892 NZD to $8,841 NZD

A
Cheapest Retailer
-
$3,892 NZD
A
Retailer 2
-
$4,040 NZD
View
A
Retailer 3
-
$4,534 NZD
View
A
Retailer 4
-
$4,662 NZD
View
A
Retailer 5
-
$4,671 NZD
View
Final sale: no returns
A
Retailer 6
-
$4,814 NZD
View
Retailer 7
-
$5,059 NZD
View
Price last confirmed 29 days ago
Retailer 8
-
$5,059 NZD
View
Price last confirmed 29 days ago
Retailer 9
-
$5,059 NZD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$5,159 NZD
View
Retailer 11
-
$5,255 NZD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$5,312 NZD
View
B+
Retailer 13
-
$5,324 NZD
View
B+
Retailer 14
-
$5,406 NZD
View
Retailer 15
-
$5,838 NZD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$5,876 NZD
View
B
Retailer 17
-
$8,841 NZD
View
Retailer 18
-
$8,946 NZD
View
Price last confirmed 9 days ago
Retailer 19
-
$10,579 NZD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
c33334bf-ecea-4bc2-9b6f-720edc750f50 · Oct 3
$10,579 NZD
$5,947 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $3,892 NZDSave up to $4,949 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
$3,892 NZD