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Round|Natural|GIA

1.00ct F I1 Round Natural Diamond

VG • F/I1 • GIA 1428408599

Certificate GIA 1428408599

Diamond specifications and retailer prices

From $3,276 NZD
HK$14,400 HKD
As of November 1, 2026
Save $5,879 NZD (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,155 NZD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded F colour (colourless) and I1 clarity (included), with a very-good cut grade and certified by GIA 1428408599. Listed at 12 retailers as of November 1, 2026, with prices from $3,276 to $9,155, a $5,879 spread on the same certified stone. NZ Jewellers lists it at $9,155. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
F
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1428408599
Dimensions6.46 × 6.40 × 3.89 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cavity, Crystal, Cloud, Needle, Indented Natural, Natural
Top View
6.46 mm6.40 mm1.00 ctF / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1428408599
Side View
Table 62.0%Crown 32°Girdle: STK-THKPavilion 41.6°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $9,155 NZD|Low: $3,253 NZD|High: $9,155 NZD|Avg: $4,597 NZD
NZ Jewellers
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 1, 2026
Retailer 7$3,276 NZD
Retailer 8$3,510 NZD
Retailer 10$3,556 NZD
Retailer 14$3,583 NZD
Retailer 11$3,967 NZD
Retailer 13$3,967 NZD
Retailer 9$4,150 NZD
Retailer 12$4,577 NZD
Retailer 4$4,585 NZD
Retailer 6$4,585 NZD
Retailer 5$4,728 NZD
Retailer 3$5,210 NZD
Retailer 2$5,444 NZD
NZ Jewellers$9,155 NZD

18 data points across 14 retailers

12 retailers$3,276 NZD to $9,155 NZD

B+
Cheapest Retailer
-
$3,276 NZD
HK$14,400 HKD
B+
Retailer 2
-
$3,510 NZD
$1,975 USD
View
B+
Retailer 3
-
$3,556 NZD
$2,001 USD
View
B
Retailer 4
-
$3,967 NZD
$2,232 USD
View
B
Retailer 5
-
$3,967 NZD
$2,232 USD
View
B
Retailer 6
-
$4,150 NZD
$2,335 USD
View
B
Retailer 7
-
$4,577 NZD
$2,575 USD
View
B
Retailer 8
-
$4,585 NZD
$2,580 USD
View
B
Retailer 9
-
$4,585 NZD
$2,580 USD
View
B
Retailer 10
-
$4,728 NZD
$2,660 USD
View
B
Retailer 11
-
$5,444 NZD
€2,917 EUR
View
Most Expensive
C
NZ Jewellers
2322e5a0-8041-479e-a371-46dfcafacd32 · Nov 2
$9,155 NZD
$5,151 USD
View
11 more retailers have this diamond
Prices start from $3,276 NZDSave up to $5,879 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.

B+
1.00ct Round
$3,276 NZD