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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2534870244

Certificate GIA 2534870244

Diamond specifications and retailer prices

From $4,336 USD
As of November 4, 2026
Save $4,842 USD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,178 USD at NZ Jewellers · As of November 7, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2534870244. Listed at 21 retailers as of November 4, 2026, with prices from $4,336 to $9,178, a $4,842 spread on the same certified stone. NZ Jewellers lists it at $9,178. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2534870244
Dimensions7.29 × 7.25 × 4.53 mm
L/W Ratio1.01
Top View
7.29 mm7.25 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2534870244
Side View
Table 58.0%Crown 36°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 62.3%

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: Nov 4
Current: $9,178 USD|Low: $4,206 USD|High: $9,178 USD|Avg: $5,861 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 7, 2026
Retailer 8$4,336 USD
Retailer 18$4,589 USD
Retailer 4$4,680 USD
Retailer 11$4,806 USD
Retailer 5$4,971 USD
Retailer 7$4,971 USD
Retailer 10$4,971 USD
Retailer 15$5,266 USD
Retailer 14$5,281 USD
Retailer 3$5,531 USD
Retailer 6$5,736 USD
Retailer 13$5,837 USD
Retailer 9$6,055 USD
Retailer 2$6,169 USD
Retailer 16$6,695 USD
Retailer 12$6,856 USD
Retailer 17$8,717 USD
NZ Jewellers$9,178 USD

43 data points across 18 retailers

21 retailers$4,336 USD to $9,178 USD

Retailer 1
-
$3,750 USD
Price last confirmed 64 days ago
B+
Retailer 2
-
$4,336 USD
View
B+
Retailer 3
-
$4,589 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,680 USD
View
B+
Retailer 5
-
$4,806 USD
View
B+
Retailer 6
-
$4,971 USD
View
B+
Retailer 7
-
$4,971 USD
View
B+
Retailer 8
-
$4,971 USD
View
Retailer 9
-
$5,068 USD
View
Price last confirmed 61 days ago
B+
Retailer 10
-
$5,266 USD
View
B
Retailer 11
-
$5,281 USD
View
Retailer 12
-
$5,449 USD
View
Price last confirmed 7 days ago
Retailer 13
-
$5,531 USD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$5,736 USD
View
B
Retailer 15
-
$5,837 USD
View
Retailer 16
-
$5,847 USD
View
Price last confirmed 61 days ago
B
Retailer 17
-
$6,169 USD
View
B
Retailer 18
-
$6,695 USD
View
B
Retailer 19
-
$6,856 USD
View
B
Retailer 20
-
$8,717 USD
View
Most Expensive
B
NZ Jewellers
9e875afa-4199-41ab-afc2-d5ce3d42e015 · Nov 7
$9,178 USD
View
20 more retailers have this diamond
Prices start from $4,336 USDSave up to $4,842 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 Round
$4,336 USD