Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 2171943911

Certificate GIA 2171943911

Diamond specifications and retailer prices

From $4,900 USD
As of October 30, 2026
Save $5,591 USD (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $10,491 USD at NZ Jewellers · As of October 30, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2171943911. Listed at 23 retailers as of October 30, 2026, with prices from $4,900 to $10,491, a $5,591 spread on the same certified stone. NZ Jewellers lists it at $10,491. 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
J
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2171943911
Dimensions7.12 × 5.74 × 3.98 mm
L/W Ratio1.24
Culet sizeNone
Top View
7.12 mm5.74 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2171943911
Side View
Table 67.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $10,491 USD|Low: $4,546 USD|High: $10,491 USD|Avg: $6,571 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
Retailer 13
October 31, 2026
Retailer 9$4,810 USD
Retailer 11$4,956 USD
Retailer 13$5,245 USD
Retailer 10$5,289 USD
Retailer 3$5,682 USD
Retailer 4$5,682 USD
Retailer 5$5,682 USD
Retailer 6$5,967 USD
Retailer 12$6,201 USD
Retailer 7$6,854 USD
Retailer 2$7,707 USD
Retailer 8$9,290 USD
NZ Jewellers$10,491 USD

44 data points across 13 retailers

23 retailers$4,900 USD to $10,491 USD

Retailer 1
-
$4,810 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
$4,900 USD
View
B+
Retailer 3
-
$4,956 USD
View
B
Retailer 4
-
$5,160 USD
A$7,938 AUD
View
B
Retailer 5
-
$5,245 USD
View
Final sale: no returns
B
Retailer 6
-
$5,289 USD
View
B
Retailer 7
-
$5,310 USD
View
B
Retailer 8
-
$5,612 USD
View
B
Retailer 9
-
$5,682 USD
View
B
Retailer 10
-
$5,682 USD
View
B
Retailer 11
-
$5,682 USD
View
B
Retailer 12
-
$5,967 USD
£4,699 GBP
View
B
Retailer 13
-
$6,096 USD
A$9,378 AUD
View
Retailer 14
-
$6,201 USD
A$9,539 AUD
View
Price last confirmed 21 days ago
B
Retailer 15
-
$6,240 USD
View
B
Retailer 16
-
$6,240 USD
View
B
Retailer 17
-
$6,440 USD
View
B
Retailer 18
-
$6,557 USD
View
B
Retailer 19
-
$6,854 USD
€6,528 EUR
View
Retailer 20
-
$6,916 USD
View
Price last confirmed 8 days ago
B
Retailer 21
-
$7,707 USD
ZAR 124,500 ZAR
View
B
Retailer 22
-
$9,290 USD
£7,315 GBP
View
Most Expensive
C
NZ Jewellers
5e857763-58db-40dd-b925-02ba4a7cf632 · Oct 30
$10,491 USD
View
22 more retailers have this diamond
Prices start from $4,900 USDSave up to $5,591 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
$4,900 USD