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Radiant|Natural|GIA

0.51ct H SI2 Radiant Natural Diamond

GD • H/SI2 • GIA 2221712123

Certificate GIA 2221712123

Diamond specifications and retailer prices

From $697 NZD
$393 USD
As of November 2, 2026
Save $500 NZD (42%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,197 NZD at DreamStone · As of October 31, 2026
View at DreamStone

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2221712123. Listed at 3 retailers as of October 31, 2026, with prices from $697 to $1,197, a $500 spread on the same certified stone. DreamStone lists it at $1,197. 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

0.51
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2221712123
Dimensions4.25 × 3.93 × 3.37 mm
L/W Ratio1.08
Girdle conditionPolished
Top View
4.25 mm3.93 mm0.51 ctH / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 2221712123
Side View
Table 75.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 85.6%

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 2
Current: $1,197 NZD|Low: $633 NZD|High: $1,536 NZD|Avg: $1,114 NZD
DreamStone
Retailer 2
Retailer 3
Retailer 4
October 5, 2026
Retailer 2$697 NZD
Retailer 3$1,056 NZD
DreamStone$1,197 NZD
Retailer 4$1,536 NZD

2 data points across 4 retailers

3 retailers$697 NZD to $1,197 NZD

B+
Cheapest Retailer
-
$697 NZD
$393 USD
Final sale: no returns
B+
Retailer 2
-
$1,056 NZD
$595 USD
View
Most Expensive
B
DreamStone
CC2737 · Oct 31
$1,197 NZD
$675 USD
View
2 more retailers have this diamond
Prices start from $697 NZDSave up to $500 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+
0.51ct Radiant
$697 NZD