Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 6555896738

Certificate GIA 6555896738

Diamond specifications and retailer prices

From $9,178 CAD
£5,173 GBP
As of October 30, 2026
Save $5,308 CAD (37%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $16,439 CAD at NZ Jewellers · As of September 20, 2026
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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555896738. Listed at 7 retailers as of October 29, 2026, with a 58% 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

1.51
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle53.58°
Pavilion angle38.23°
OriginNatural
Grading LabGIA
CertificateGIA 6555896738
Dimensions7.35 × 5.80 × 4.09 mm
L/W Ratio1.27
Girdle conditionThick
Key to symbols
Crystal, Feather, Needle, Pinpoint
Top View
7.35 mm5.80 mm1.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555896738
Side View
Table 75.0%Crown 53.58°Girdle: SLI-POLPavilion 38.23°Culet: NoneDepth 70.5%

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: Oct 30
Current: $9,303 CAD|Low: $9,059 CAD|High: $14,654 CAD|Avg: $10,567 CAD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2$9,178 CAD
Retailer 1$9,303 CAD
Retailer 5$9,303 CAD
Retailer 4$9,492 CAD
Retailer 3$14,485 CAD

35 data points across 5 retailers

7 retailers$9,178 CAD to $14,485 CAD

A
Cheapest Retailer
-
$9,178 CAD
£5,173 GBP
A
Retailer 2
-
$9,303 CAD
$6,660 USD
View
A
Retailer 3
-
$9,303 CAD
$6,660 USD
View
Retailer 4
-
$9,492 CAD
A$10,454 AUD
View
Price last confirmed 9 days ago
Retailer 5
-
$9,829 CAD
$7,036 USD
View
Price last confirmed 38 days ago
B
Retailer 6
-
$14,485 CAD
£8,165 GBP
View
Most Expensive
NZ Jewellers
d1d53a57-48c9-434e-b0e2-7ca3a4344203 · Sep 20
$16,439 CAD
$11,768 USD
View
Price last confirmed 40 days ago
6 more retailers have this diamond
Prices start from $9,178 CADSave up to $5,308 CAD

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
1.51ct Radiant
$9,178 CAD