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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 $1,873 USD
As of November 6, 2026
Save $3,420 USD (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,293 USD 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 $1,873 to $5,293, a $3,420 spread on the same certified stone. NZ Jewellers lists it at $5,293. 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
Color
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: $5,293 USD|Low: $1,788 USD|High: $5,293 USD|Avg: $2,707 USD|+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$1,873 USD
Retailer 7$2,220 USD
Retailer 4$2,236 USD
Retailer 6$2,288 USD
Retailer 14$2,320 USD
Retailer 10$2,337 USD
Retailer 11$2,396 USD
Retailer 2$2,495 USD
Retailer 5$2,532 USD
Retailer 12$2,630 USD
Retailer 13$2,660 USD
Retailer 17$2,672 USD
Retailer 15$2,850 USD
Retailer 19$2,900 USD
Retailer 8$2,915 USD
Retailer 18$2,934 USD
Retailer 3$3,090 USD
Retailer 9$4,173 USD
NZ Jewellers$5,293 USD

17 data points across 19 retailers

21 retailers$1,873 USD to $5,293 USD

A
Cheapest Retailer
-
$1,873 USD
B+
Retailer 2
-
$2,220 USD
View
B+
Retailer 3
-
$2,236 USD
View
B+
Retailer 4
-
$2,288 USD
View
B+
Retailer 5
-
$2,320 USD
View
Final sale: no returns
B+
Retailer 6
-
$2,337 USD
View
Retailer 7
-
$2,396 USD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$2,495 USD
View
B
Retailer 9
-
$2,532 USD
View
B
Retailer 10
-
$2,630 USD
View
B
Retailer 11
-
$2,660 USD
View
B
Retailer 12
-
$2,672 USD
View
Retailer 13
-
$2,827 USD
View
Price last confirmed 62 days ago
B
Retailer 14
-
$2,850 USD
View
B
Retailer 15
-
$2,900 USD
View
B
Retailer 16
-
$2,915 USD
View
B
Retailer 17
-
$2,934 USD
View
Retailer 18
-
$2,983 USD
View
Price last confirmed 31 days ago
B
Retailer 19
-
$3,090 USD
View
B
Retailer 20
-
$4,173 USD
View
Most Expensive
C
NZ Jewellers
ddff99e5-3010-47f4-a91f-cf2cb293f2eb · Nov 5
$5,293 USD
View
20 more retailers have this diamond
Prices start from $1,873 USDSave up to $3,420 USD

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
$1,873 USD