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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5406598535

Certificate GIA 5406598535

Diamond specifications and retailer prices

From $4,371 NZD
As of October 31, 2026
Save $7,665 NZD (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,036 NZD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 5406598535. Listed at 21 retailers as of October 31, 2026, with prices from $4,371 to $12,036, a $7,665 spread on the same certified stone. Diamond Quarter lists it at $12,036. 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
SymmetryVery Good
FluorescenceMedium
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5406598535
Dimensions6.54 × 6.52 × 3.88 mm
L/W Ratio1.00
Top View
6.54 mm6.52 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5406598535
Side View
Table 58.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.4%

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: Oct 31
Current: $5,810 NZD|Low: $4,360 NZD|High: $10,629 NZD|Avg: $6,317 NZD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12$4,371 NZD
Retailer 2$4,440 NZD
Retailer 10$5,479 NZD
Retailer 3$5,523 NZD
Retailer 4$5,604 NZD
Retailer 1$5,810 NZD
Retailer 5$6,166 NZD
Retailer 6$6,244 NZD
Retailer 11$6,374 NZD
Retailer 7$7,411 NZD
Retailer 8$10,125 NZD
Retailer 9$10,629 NZD

29 data points across 12 retailers

21 retailers$4,371 NZD to $12,036 NZD

A
Cheapest Retailer
-
$4,371 NZD
A
Retailer 2
-
$4,440 NZD
View
A
Retailer 3
-
$5,237 NZD
View
A
Retailer 4
-
$5,479 NZD
View
B+
Retailer 5
-
$5,523 NZD
View
B+
Retailer 6
-
$5,604 NZD
View
Final sale: no returns
B+
Retailer 7
-
$5,810 NZD
View
B+
Retailer 8
-
$6,071 NZD
View
Retailer 9
-
$6,071 NZD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$6,166 NZD
View
B+
Retailer 11
-
$6,244 NZD
View
B+
Retailer 12
-
$6,304 NZD
View
B+
Retailer 13
-
$6,374 NZD
View
Retailer 14
-
$6,509 NZD
View
Price last confirmed 33 days ago
B+
Retailer 15
-
$7,005 NZD
View
B+
Retailer 16
-
$7,411 NZD
View
B
Retailer 17
-
$10,125 NZD
View
B
Retailer 18
-
$10,577 NZD
View
B
Retailer 19
-
$10,629 NZD
View
B
Retailer 20
-
$11,230 NZD
View
Most Expensive
B
Diamond Quarter
1.0SI1D5435FF5FN · Nov 5
$12,036 NZD
£5,328 GBP
View
20 more retailers have this diamond
Prices start from $4,371 NZDSave up to $7,665 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
$4,371 NZD