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Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

GD • H/SI1 • GIA 2556450106

Certificate GIA 2556450106

Diamond specifications and retailer prices

From $1,980 SGD
HK$12,100 HKD
As of November 1, 2026
Save $4,199 SGD (68%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $6,179 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 2556450106. Listed at 25 retailers as of October 30, 2026, with prices from $1,980 to $6,179, a $4,199 spread on the same certified stone. NZ Jewellers lists it at $6,179. 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
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle40°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556450106
Dimensions6.02 × 6.11 × 4.09 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Cloud, Pinpoint, Indented Natural, Natural
Top View
6.02 mm6.11 mm1.00 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 2556450106
Side View
Table 59.0%Crown 40°Girdle: MED-VTKPavilion 41°Culet: NoneDepth 67.4%

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: Nov 1
Current: $6,179 SGD|Low: $1,964 SGD|High: $6,179 SGD|Avg: $3,005 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 1, 2026
Retailer 20$1,980 SGD
Retailer 2$1,997 SGD
Retailer 7$2,276 SGD
Retailer 15$2,288 SGD
Retailer 11$2,338 SGD
Retailer 10$2,372 SGD
Retailer 8$2,531 SGD
Retailer 4$2,534 SGD
Retailer 6$2,534 SGD
Retailer 21$2,582 SGD
Retailer 23$2,616 SGD
Retailer 5$2,650 SGD
Retailer 3$2,710 SGD
Retailer 12$2,750 SGD
Retailer 19$2,763 SGD
Retailer 9$2,922 SGD
Retailer 14$2,922 SGD
Retailer 22$3,114 SGD
Retailer 18$3,385 SGD
Retailer 24$3,701 SGD
Retailer 16$3,720 SGD
Retailer 17$3,825 SGD
Retailer 13$4,439 SGD
NZ Jewellers$6,179 SGD

27 data points across 24 retailers

25 retailers$1,980 SGD to $6,179 SGD

B+
Cheapest Retailer
-
$1,980 SGD
HK$12,100 HKD
A
Retailer 2
-
$1,997 SGD
₹148,805 INR
View
B+
Retailer 3
-
$2,276 SGD
A$2,739 AUD
View
B+
Retailer 4
-
$2,288 SGD
$1,790 USD
View
B+
Retailer 5
-
$2,338 SGD
$1,829 USD
View
Final sale: no returns
B+
Retailer 6
-
$2,372 SGD
View
B+
Retailer 7
-
$2,531 SGD
$1,980 USD
View
B+
Retailer 8
-
$2,534 SGD
$1,982 USD
View
B+
Retailer 9
-
$2,534 SGD
$1,982 USD
View
B+
Retailer 10
-
$2,582 SGD
$2,020 USD
View
B+
Retailer 11
-
$2,616 SGD
$2,046 USD
View
B+
Retailer 12
-
$2,650 SGD
$2,073 USD
View
B+
Retailer 13
-
$2,710 SGD
$2,120 USD
View
B+
Retailer 14
-
$2,750 SGD
View
B+
Retailer 15
-
$2,763 SGD
£1,702 GBP
View
B+
Retailer 16
-
$2,922 SGD
£1,800 GBP
View
B+
Retailer 17
-
$2,922 SGD
$2,286 USD
View
B+
Retailer 18
-
$3,114 SGD
ZAR 39,349 ZAR
View
Retailer 19
-
$3,286 SGD
A$3,954 AUD
View
Price last confirmed 26 days ago
B+
Retailer 20
-
$3,385 SGD
€2,522 EUR
View
B
Retailer 21
-
$3,701 SGD
$2,895 USD
View
B
Retailer 22
-
$3,720 SGD
$2,910 USD
View
B
Retailer 23
-
$3,825 SGD
$2,992 USD
View
B
Retailer 24
-
$4,439 SGD
£2,734 GBP
View
Most Expensive
C
NZ Jewellers
a8977eb8-a3da-4fd8-8ac7-0b132184bc8c · Oct 30
$6,179 SGD
$4,833 USD
View
24 more retailers have this diamond
Prices start from $1,980 SGDSave up to $4,199 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.

A
1.00ct Round
$1,980 SGD