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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1435831747

Certificate GIA 1435831747

Diamond specifications and retailer prices

From $5,159 NZD
As of November 6, 2026
Save $7,520 NZD (59%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $12,679 NZD at Diamond Quarter · As of November 6, 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 1435831747. Listed at 28 retailers as of November 6, 2026, with prices from $5,159 to $12,679, a $7,520 spread on the same certified stone. Diamond Quarter lists it at $12,679. 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 angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1435831747
Dimensions6.55 × 6.47 × 3.82 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Key to symbols
Crystal, Feather, Cavity, Needle, Natural
Top View
6.55 mm6.47 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1435831747
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 58.6%

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: $7,534 NZD|Low: $4,773 NZD|High: $11,963 NZD|Avg: $7,087 NZD|+5.6%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 5, 2026
Retailer 5$5,159 NZD
Retailer 6$5,274 NZD
Retailer 20$5,390 NZD
Retailer 11$5,522 NZD
Retailer 16$5,637 NZD
Retailer 13$5,741 NZD
Retailer 7$5,986 NZD
Retailer 3$6,221 NZD
Retailer 8$6,221 NZD
Retailer 4$6,459 NZD
Retailer 21$6,765 NZD
Retailer 19$6,911 NZD
Retailer 17$7,078 NZD
Retailer 10$7,178 NZD
Retailer 23$7,187 NZD
Retailer 24$7,187 NZD
Retailer 14$7,386 NZD
Retailer 2$7,418 NZD
Retailer 1$7,534 NZD
Retailer 15$7,774 NZD
Retailer 18$7,895 NZD
Retailer 12$8,380 NZD
Retailer 22$11,483 NZD
Retailer 9$11,963 NZD

37 data points across 24 retailers

28 retailers$5,159 NZD to $12,679 NZD

A
Cheapest Retailer
-
$5,159 NZD
A
Retailer 2
-
$5,274 NZD
View
A
Retailer 3
-
$5,390 NZD
View
B+
Retailer 4
-
$5,522 NZD
View
B+
Retailer 5
-
$5,637 NZD
View
B+
Retailer 6
-
$5,716 NZD
View
B+
Retailer 7
-
$5,741 NZD
View
Final sale: no returns
B+
Retailer 8
-
$5,986 NZD
View
Retailer 9
-
$6,221 NZD
View
Price last confirmed 15 days ago
Retailer 10
-
$6,221 NZD
View
Price last confirmed 13 days ago
Retailer 11
-
$6,459 NZD
View
Price last confirmed 15 days ago
Retailer 12
-
$6,509 NZD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
$6,765 NZD
View
Retailer 14
-
$6,765 NZD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$6,911 NZD
View
Retailer 16
-
$7,078 NZD
View
Price last confirmed 29 days ago
Retailer 17
-
$7,178 NZD
View
Price last confirmed 14 days ago
B
Retailer 18
-
$7,187 NZD
View
B
Retailer 19
-
$7,187 NZD
View
B+
Retailer 20
-
$7,386 NZD
View
B+
Retailer 21
-
$7,418 NZD
View
B+
Retailer 22
-
$7,534 NZD
View
Retailer 23
-
$7,774 NZD
View
Price last confirmed 14 days ago
B+
Retailer 24
-
$7,895 NZD
View
B
Retailer 25
-
$8,380 NZD
View
B
Retailer 26
-
$11,483 NZD
View
Retailer 27
-
$11,963 NZD
View
Price last confirmed 14 days ago
Most Expensive
B
Diamond Quarter
1.0SI1D1447F491N · Nov 6
$12,679 NZD
£5,612 GBP
View
27 more retailers have this diamond
Prices start from $5,159 NZDSave up to $7,520 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
$5,159 NZD