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Radiant|Natural|GIA

1.00ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 2556511021

Certificate GIA 2556511021

Diamond specifications and retailer prices

From $2,400 SGD
As of November 6, 2026
Save $4,383 SGD (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,784 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556511021. Listed at 21 retailers as of November 5, 2026, with prices from $2,400 to $6,784, a $4,383 spread on the same certified stone. NZ Jewellers lists it at $6,784. 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 (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556511021
Dimensions7.71 × 4.78 × 3.20 mm
L/W Ratio1.61
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Needle, Pinpoint
Top View
7.71 mm4.78 mm1.00 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556511021
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.8%

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: $6,784 SGD|Low: $2,292 SGD|High: $6,784 SGD|Avg: $3,470 SGD|+5.1%
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
November 7, 2026
Retailer 16$2,400 SGD
Retailer 7$2,845 SGD
Retailer 4$2,866 SGD
Retailer 6$2,932 SGD
Retailer 14$2,973 SGD
Retailer 10$2,995 SGD
Retailer 11$3,071 SGD
Retailer 2$3,198 SGD
Retailer 5$3,245 SGD
Retailer 12$3,371 SGD
Retailer 13$3,409 SGD
Retailer 17$3,424 SGD
Retailer 15$3,653 SGD
Retailer 19$3,717 SGD
Retailer 8$3,736 SGD
Retailer 18$3,760 SGD
Retailer 3$3,960 SGD
Retailer 9$5,348 SGD
NZ Jewellers$6,784 SGD

17 data points across 19 retailers

21 retailers$2,400 SGD to $6,784 SGD

A
Cheapest Retailer
-
$2,400 SGD
B+
Retailer 2
-
$2,845 SGD
View
B+
Retailer 3
-
$2,866 SGD
View
B+
Retailer 4
-
$2,932 SGD
View
B+
Retailer 5
-
$2,973 SGD
View
Final sale: no returns
B+
Retailer 6
-
$2,995 SGD
View
Retailer 7
-
$3,071 SGD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$3,198 SGD
View
B
Retailer 9
-
$3,245 SGD
View
B
Retailer 10
-
$3,371 SGD
View
B
Retailer 11
-
$3,409 SGD
View
B
Retailer 12
-
$3,424 SGD
View
Retailer 13
-
$3,623 SGD
View
Price last confirmed 62 days ago
B
Retailer 14
-
$3,653 SGD
View
B
Retailer 15
-
$3,717 SGD
View
B
Retailer 16
-
$3,736 SGD
View
B
Retailer 17
-
$3,760 SGD
View
Retailer 18
-
$3,823 SGD
View
Price last confirmed 31 days ago
B
Retailer 19
-
$3,960 SGD
View
B
Retailer 20
-
$5,348 SGD
View
Most Expensive
C
NZ Jewellers
ddff99e5-3010-47f4-a91f-cf2cb293f2eb · Nov 5
$6,784 SGD
$5,293 USD
View
20 more retailers have this diamond
Prices start from $2,400 SGDSave up to $4,383 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 Radiant
$2,400 SGD