Radiant|Natural|GIA

1.51ct L SI2 Radiant Natural Diamond

EX • L/SI2 • GIA 6435273121

Certificate GIA 6435273121

Diamond specifications and retailer prices

From $2,735 USD
As of November 7, 2026
Save $1,111 USD (29%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,807 USD at NZ Jewellers · As of October 18, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6435273121. Listed at 9 retailers as of November 4, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6435273121
Dimensions6.76 × 5.55 × 3.99 mm
L/W Ratio1.22
Top View
6.76 mm5.55 mm1.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6435273121
Side View
Table 66.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.9%

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 7
Current: $5,807 USD|Low: $2,624 USD|High: $5,807 USD|Avg: $3,558 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
November 4, 2026
Retailer 4$2,624 USD
Retailer 12$2,735 USD
Retailer 10$2,959 USD
Retailer 7$3,333 USD
Retailer 2$3,377 USD
Retailer 6$3,449 USD
Retailer 9$3,462 USD
Retailer 11$3,477 USD
Retailer 5$3,846 USD
Retailer 8$3,873 USD
Retailer 3$3,966 USD
NZ Jewellers$5,807 USD

28 data points across 12 retailers

9 retailers$2,735 USD to $3,846 USD

B+
Cheapest Retailer
-
$2,735 USD
Retailer 2
-
$2,959 USD
View
Price last confirmed 18 days ago
Retailer 3
-
$3,333 USD
View
Price last confirmed 18 days ago
B
Retailer 4
-
$3,377 USD
View
B
Retailer 5
-
$3,449 USD
View
Retailer 6
-
$3,462 USD
View
Price last confirmed 22 days ago
B
Retailer 7
-
$3,477 USD
View
B
Retailer 8
-
$3,846 USD
View
Most Expensive
NZ Jewellers
759621d4-8cbd-412f-946b-2d0f3f45db12 · Oct 18
$5,807 USD
View
Price last confirmed 20 days ago
8 more retailers have this diamond
Prices start from $2,735 USDSave up to $1,111 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
$2,735 USD