CaratHunter
Plans
Round|Natural|GIA

1.00ct F I1 Round Natural Diamond

VG • F/I1 • GIA 1428408599

Certificate GIA 1428408599

Diamond specifications and retailer prices

From $2,356 SGD
HK$14,400 HKD
As of November 1, 2026
Save $4,229 SGD (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,585 SGD at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from $2,356 to $6,585, a $4,229 spread on the same certified stone. NZ Jewellers lists it at $6,585. 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: $6,585 SGD|Low: $2,340 SGD|High: $6,585 SGD|Avg: $3,306 SGD
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$2,356 SGD
Retailer 8$2,525 SGD
Retailer 10$2,558 SGD
Retailer 14$2,577 SGD
Retailer 11$2,853 SGD
Retailer 13$2,853 SGD
Retailer 9$2,985 SGD
Retailer 12$3,292 SGD
Retailer 4$3,298 SGD
Retailer 6$3,298 SGD
Retailer 5$3,401 SGD
Retailer 3$3,748 SGD
Retailer 2$3,916 SGD
NZ Jewellers$6,585 SGD

18 data points across 14 retailers

12 retailers$2,356 SGD to $6,585 SGD

B+
Cheapest Retailer
-
$2,356 SGD
HK$14,400 HKD
B+
Retailer 2
-
$2,525 SGD
$1,975 USD
View
B+
Retailer 3
-
$2,558 SGD
$2,001 USD
View
B
Retailer 4
-
$2,853 SGD
$2,232 USD
View
B
Retailer 5
-
$2,853 SGD
$2,232 USD
View
B
Retailer 6
-
$2,985 SGD
$2,335 USD
View
B
Retailer 7
-
$3,292 SGD
$2,575 USD
View
B
Retailer 8
-
$3,298 SGD
$2,580 USD
View
B
Retailer 9
-
$3,298 SGD
$2,580 USD
View
B
Retailer 10
-
$3,401 SGD
$2,660 USD
View
B
Retailer 11
-
$3,916 SGD
€2,917 EUR
View
Most Expensive
C
NZ Jewellers
2322e5a0-8041-479e-a371-46dfcafacd32 · Oct 30
$6,585 SGD
$5,151 USD
View
11 more retailers have this diamond
Prices start from $2,356 SGDSave up to $4,229 SGD

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
$2,356 SGD