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Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

VG • I/SI2 • GIA 2557877387

Certificate GIA 2557877387

Diamond specifications and retailer prices

From $2,890 USD
As of November 6, 2026
Save $3,795 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,685 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557877387. Listed at 18 retailers as of November 5, 2026, with prices from $2,890 to $6,685, a $3,795 spread on the same certified stone. NZ Jewellers lists it at $6,685. 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

1.50
Carat
I
Color
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557877387
Dimensions7.69 × 5.63 × 3.82 mm
L/W Ratio1.37
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle, Indented Natural, Natural
Top View
7.69 mm5.63 mm1.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 2557877387
Side View
Table 62.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 67.8%

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: $6,685 USD|Low: $2,890 USD|High: $6,970 USD|Avg: $4,190 USD|-4.1%
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
November 7, 2026
Retailer 12$2,890 USD
Retailer 3$3,048 USD
Retailer 18$3,406 USD
Retailer 9$3,690 USD
Retailer 13$3,722 USD
Retailer 16$3,837 USD
Retailer 2$3,886 USD
Retailer 6$3,935 USD
Retailer 10$3,946 USD
Retailer 14$3,983 USD
Retailer 4$3,985 USD
Retailer 11$4,050 USD
Retailer 17$4,080 USD
Retailer 15$4,216 USD
Retailer 5$4,220 USD
Retailer 7$4,428 USD
Retailer 8$6,508 USD
NZ Jewellers$6,685 USD

15 data points across 18 retailers

18 retailers$2,890 USD to $6,685 USD

A
Cheapest Retailer
-
$2,890 USD
A
Retailer 2
-
$3,048 USD
View
Final sale: no returns
A
Retailer 3
-
$3,406 USD
View
A
Retailer 4
-
$3,690 USD
View
A
Retailer 5
-
$3,722 USD
View
A
Retailer 6
-
$3,837 USD
View
A
Retailer 7
-
$3,886 USD
View
A
Retailer 8
-
$3,935 USD
View
Retailer 9
-
$3,946 USD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$3,983 USD
View
B+
Retailer 11
-
$3,985 USD
View
A
Retailer 12
-
$4,050 USD
View
A
Retailer 13
-
$4,080 USD
View
A
Retailer 14
-
$4,216 USD
View
A
Retailer 15
-
$4,220 USD
View
B+
Retailer 16
-
$4,428 USD
View
B
Retailer 17
-
$6,508 USD
View
Most Expensive
B
NZ Jewellers
5e60bdd7-0f2a-4964-b8e6-500e298e64c6 · Nov 5
$6,685 USD
View
17 more retailers have this diamond
Prices start from $2,890 USDSave up to $3,795 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
1.50ct Radiant
$2,890 USD