Radiant|Natural|GIA

0.51ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 1379698927

Certificate GIA 1379698927

Diamond specifications and retailer prices

From $524 USD
As of November 6, 2026
Save $1,259 USD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,783 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1379698927. Listed at 15 retailers as of November 5, 2026, with prices from $524 to $1,783, a $1,259 spread on the same certified stone. NZ Jewellers lists it at $1,783. 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
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1379698927
Dimensions5.12 × 4.07 × 2.59 mm
L/W Ratio1.26
Key to symbols
Needle, Feather, Crystal
Top View
5.12 mm4.07 mm0.51 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1379698927
Side View
Table 71.0%CrownGirdlePavilionCulet: NoneDepth 63.6%

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: $1,783 USD|Low: $481 USD|High: $1,783 USD|Avg: $762 USD
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
November 7, 2026
Retailer 7$522 USD
Retailer 4$524 USD
Retailer 13$563 USD
Retailer 16$569 USD
Retailer 14$612 USD
Retailer 15$612 USD
Retailer 8$634 USD
Retailer 6$640 USD
Retailer 3$656 USD
Retailer 9$690 USD
Retailer 10$694 USD
Retailer 5$765 USD
Retailer 11$840 USD
Retailer 12$877 USD
Retailer 2$1,306 USD
NZ Jewellers$1,783 USD

31 data points across 16 retailers

15 retailers$524 USD to $1,783 USD

B+
Cheapest Retailer
-
$524 USD
Final sale: no returns
B+
Retailer 2
-
$563 USD
View
A
Retailer 3
-
$569 USD
View
B+
Retailer 4
-
$612 USD
View
Retailer 5
-
$612 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$640 USD
View
B+
Retailer 7
-
$656 USD
View
B+
Retailer 8
-
$690 USD
View
B+
Retailer 9
-
$694 USD
View
B+
Retailer 10
-
$700 USD
View
B+
Retailer 11
-
$765 USD
View
B
Retailer 12
-
$840 USD
View
B
Retailer 13
-
$877 USD
View
B
Retailer 14
-
$1,306 USD
View
Most Expensive
C
NZ Jewellers
59126b56-8549-405a-82f9-ea03ad1831b6 · Nov 5
$1,783 USD
View
14 more retailers have this diamond
Prices start from $524 USDSave up to $1,259 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
0.51ct Radiant
$524 USD