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Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 2215189168

Certificate GIA 2215189168

Diamond specifications and retailer prices

From $17,226 CAD
£9,710 GBP
As of October 31, 2026
Save $7,987 CAD (32%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $25,213 CAD at MOH London · As of October 29, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2215189168. Listed at 4 retailers as of October 29, 2026, with prices from $17,226 to $25,213, a $7,987 spread on the same certified stone. MOH London lists it at $25,213. 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2215189168
Dimensions8.51 × 5.05 × 3.44 mm
L/W Ratio1.69
Culet sizeNone
Cert comments
Pinpoints are not shown.
Top View
8.51 mm5.05 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2215189168
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.2%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $25,213 CAD|Low: $14,750 CAD|High: $25,382 CAD|Avg: $18,992 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 5$14,750 CAD
Retailer 2$17,226 CAD
Retailer 4$17,468 CAD
Retailer 3$20,235 CAD
MOH London$25,213 CAD

44 data points across 5 retailers

4 retailers$17,226 CAD to $25,213 CAD

B+
Cheapest Retailer
-
$17,226 CAD
£9,710 GBP
Retailer 2
-
$17,468 CAD
A$19,238 AUD
View
Price last confirmed 7 days ago
B
Retailer 3
-
$20,235 CAD
€13,796 EUR
View
Most Expensive
B
MOH London
9113D6DB2 · Oct 29
$25,213 CAD
£14,212 GBP
View
3 more retailers have this diamond
Prices start from $17,226 CADSave up to $7,987 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.

B+
1.51ct Radiant
$17,226 CAD