Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

EX • H/SI1

Diamond specifications and retailer prices

From $5,751 USD
CA$7,987 CAD
Save $5,182 USD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,933 USD at NZ Jewellers
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 11 retailers, with prices from $5,751 to $10,933 at NZ Jewellers, a $5,182 spread on the same certified stone. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions7.89 × 5.79 × 4.02 mm
L/W Ratio1.36
Top View
7.89 mm5.79 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 69.0%CrownGirdle: MediumPavilionCulet: NDepth 69.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 29
Current: $10,933 USD|Low: $5,751 USD|High: $10,933 USD|Avg: $6,499 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 30, 2026
Retailer 8$5,751 USD
Retailer 9$5,840 USD
Retailer 2$5,922 USD
Retailer 4$5,922 USD
Retailer 5$5,922 USD
Retailer 7$6,180 USD
Retailer 3$6,234 USD
Retailer 10$6,514 USD
Retailer 6$6,833 USD
NZ Jewellers$10,933 USD

21 data points across 10 retailers

11 retailers$5,751 USD to $10,933 USD

B+
Cheapest Retailer
-
$5,751 USD
CA$7,987 CAD
B+
Retailer 2
-
$5,840 USD
View
B+
Retailer 3
-
$5,922 USD
View
B+
Retailer 4
-
$5,922 USD
View
B+
Retailer 5
-
$5,922 USD
View
B+
Retailer 6
-
$6,180 USD
View
B+
Retailer 7
-
$6,234 USD
£4,909 GBP
View
B+
Retailer 8
-
$6,514 USD
View
B
Retailer 9
-
$6,833 USD
View
B
Retailer 10
-
$6,833 USD
View
Price last confirmed 20 days ago
Most Expensive
C
NZ Jewellers
fbe75e5c-cf23-4249-9191-c43b7b698c9e · Sep 30
$10,933 USD
View
10 more retailers have this diamond
Prices start from $5,751 USDSave up to $5,182 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.

B+
1.51ct Radiant
$5,751 USD