Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2245026927

Certificate GIA 2245026927

Diamond specifications and retailer prices

From $3,187 USD
HK$24,900 HKD
As of October 30, 2026
Save $3,819 USD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,871 USD at NZ Jewellers · As of September 25, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245026927. Listed at 16 retailers as of October 29, 2026, with a 120% 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
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2245026927
Dimensions7.27 × 7.31 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.27 mm7.31 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245026927
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,060 USD|Low: $3,098 USD|High: $7,282 USD|Avg: $4,479 USD|-1.3%
Retailer 1
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
October 31, 2026
Retailer 12$3,187 USD
Retailer 9$3,259 USD
Retailer 13$3,385 USD
Retailer 10$3,404 USD
Retailer 2$3,659 USD
Retailer 3$3,852 USD
Retailer 4$3,937 USD
Retailer 1$4,060 USD
Retailer 6$4,263 USD
Retailer 5$4,400 USD
Retailer 7$4,839 USD
Retailer 11$5,570 USD
Retailer 14$6,538 USD
Retailer 8$7,007 USD

36 data points across 14 retailers

16 retailers$3,187 USD to $7,007 USD

A
Cheapest Retailer
-
$3,187 USD
HK$24,900 HKD
A
Retailer 2
-
$3,259 USD
View
A
Retailer 3
-
$3,385 USD
View
A
Retailer 4
-
$3,404 USD
View
B+
Retailer 5
-
$3,659 USD
View
Final sale: no returns
B+
Retailer 6
-
$3,746 USD
A$5,763 AUD
View
A
Retailer 7
-
$3,852 USD
View
Retailer 8
-
$3,937 USD
SGD 5,320 SGD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
$4,060 USD
£3,197 GBP
View
B+
Retailer 10
-
$4,263 USD
A$6,558 AUD
View
Retailer 11
-
$4,400 USD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$4,839 USD
€4,609 EUR
View
B
Retailer 13
-
$5,570 USD
View
B
Retailer 14
-
$6,538 USD
View
B
Retailer 15
-
$7,007 USD
£5,517 GBP
View
Most Expensive
NZ Jewellers
2655f6ef-5654-4938-861c-cb17c05216c5 · Sep 25
$7,871 USD
View
Price last confirmed 35 days ago
15 more retailers have this diamond
Prices start from $3,187 USDSave up to $3,819 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.

A
1.51ct Round
$3,187 USD