Radiant|Natural|GIA

1.51ct L SI1 Radiant Natural Diamond

EX • L/SI1 • GIA 5456311800

Certificate GIA 5456311800

Diamond specifications and retailer prices

From $2,470 USD
As of November 6, 2026
Save $2,781 USD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,251 USD at NZ Jewellers · As of November 5, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5456311800. Listed at 10 retailers as of November 5, 2026, with prices from $2,470 to $5,251, a $2,781 spread on the same certified stone. NZ Jewellers lists it at $5,251. 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
L
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5456311800
Dimensions7.25 × 5.96 × 4.07 mm
L/W Ratio1.22
Top View
7.25 mm5.96 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5456311800
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

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: Nov 6
Current: $5,251 USD|Low: $2,468 USD|High: $5,251 USD|Avg: $3,017 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3$2,470 USD
Retailer 6$2,512 USD
Retailer 8$2,512 USD
Retailer 9$2,628 USD
Retailer 2$2,658 USD
Retailer 7$2,898 USD
Retailer 5$3,066 USD
Retailer 4$3,119 USD
NZ Jewellers$5,251 USD

35 data points across 9 retailers

10 retailers$2,470 USD to $5,251 USD

B+
Cheapest Retailer
-
$2,470 USD
B+
Retailer 2
-
$2,490 USD
View
B+
Retailer 3
-
$2,512 USD
View
Retailer 4
-
$2,512 USD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$2,628 USD
View
B+
Retailer 6
-
$2,658 USD
View
B
Retailer 7
-
$2,898 USD
View
B
Retailer 8
-
$3,066 USD
View
B
Retailer 9
-
$3,119 USD
View
Most Expensive
C
NZ Jewellers
1db707be-c5eb-4ffe-805f-2ad9ddca4a6d · Nov 5
$5,251 USD
View
9 more retailers have this diamond
Prices start from $2,470 USDSave up to $2,781 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.

B+
1.51ct Radiant
$2,470 USD