Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

VG • I/SI2 • GIA 6551177998

Certificate GIA 6551177998

Diamond specifications and retailer prices

From $2,892 USD
As of November 6, 2026
Save $3,511 USD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,716 USD at NZ Jewellers · As of October 17, 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 6551177998. Listed at 18 retailers as of November 2, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551177998
Dimensions7.39 × 5.67 × 4.02 mm
L/W Ratio1.30
Top View
7.39 mm5.67 mm1.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551177998
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,716 USD|Low: $2,880 USD|High: $6,716 USD|Avg: $4,148 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
November 7, 2026
Retailer 14$2,892 USD
Retailer 8$3,053 USD
Retailer 11$3,415 USD
Retailer 3$3,534 USD
Retailer 9$3,641 USD
Retailer 6$3,855 USD
Retailer 7$3,855 USD
Retailer 2$3,877 USD
Retailer 15$3,975 USD
Retailer 4$4,003 USD
Retailer 13$4,010 USD
Retailer 5$4,448 USD
Retailer 10$4,457 USD
Retailer 12$6,403 USD
NZ Jewellers$6,716 USD

31 data points across 15 retailers

18 retailers$2,892 USD to $6,403 USD

A
Cheapest Retailer
-
$2,892 USD
A
Retailer 2
-
$3,053 USD
View
A
Retailer 3
-
$3,415 USD
View
A
Retailer 4
-
$3,534 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,564 USD
View
B+
Retailer 6
-
$3,641 USD
View
B+
Retailer 7
-
$3,775 USD
View
Retailer 8
-
$3,855 USD
View
Price last confirmed 20 days ago
Retailer 9
-
$3,855 USD
View
Price last confirmed 22 days ago
A
Retailer 10
-
$3,877 USD
View
B+
Retailer 11
-
$3,975 USD
View
Retailer 12
-
$4,003 USD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$4,010 USD
View
Retailer 14
-
$4,448 USD
View
Price last confirmed 19 days ago
B+
Retailer 15
-
$4,457 USD
View
Retailer 16
-
$4,478 USD
View
Price last confirmed 62 days ago
B+
Retailer 17
-
$6,403 USD
View
Most Expensive
NZ Jewellers
07bdb9c0-730f-41c8-b1b8-fa274a8128ff · Oct 17
$6,716 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $2,892 USDSave up to $3,511 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
$2,892 USD