Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2233997457

Certificate GIA 2233997457

Diamond specifications and retailer prices

From $3,968 USD
HK$31,000 HKD
As of October 30, 2026
Save $4,483 USD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,137 USD at NZ Jewellers · As of September 27, 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 2233997457. Listed at 20 retailers as of October 29, 2026, with a 113% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2233997457
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.27 mm7.31 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2233997457
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: $5,234 USD|Low: $3,853 USD|High: $8,806 USD|Avg: $5,377 USD|+5.4%
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 4$3,968 USD
Retailer 16$4,175 USD
Retailer 15$4,369 USD
Retailer 8$4,380 USD
Retailer 5$4,412 USD
Retailer 12$4,431 USD
Retailer 3$4,510 USD
Retailer 2$4,772 USD
Retailer 6$4,942 USD
Retailer 10$5,060 USD
Retailer 1$5,234 USD
Retailer 7$5,347 USD
Retailer 9$5,989 USD
Retailer 13$6,426 USD
Retailer 14$8,175 USD
Retailer 11$8,451 USD

31 data points across 16 retailers

20 retailers$3,968 USD to $8,451 USD

A
Cheapest Retailer
-
$3,968 USD
HK$31,000 HKD
A
Retailer 2
-
$4,175 USD
View
B+
Retailer 3
-
$4,369 USD
View
Retailer 4
-
$4,380 USD
View
Price last confirmed 28 days ago
B+
Retailer 5
-
$4,412 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,431 USD
View
B+
Retailer 7
-
$4,510 USD
View
B+
Retailer 8
-
$4,772 USD
View
Retailer 9
-
$4,942 USD
SGD 6,679 SGD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
$5,060 USD
View
B+
Retailer 11
-
$5,101 USD
A$7,848 AUD
View
B
Retailer 12
-
$5,234 USD
£4,121 GBP
View
Retailer 13
-
$5,347 USD
A$8,226 AUD
View
Price last confirmed 22 days ago
B
Retailer 14
-
$5,807 USD
CA$8,065 CAD
View
B
Retailer 15
-
$5,989 USD
€5,704 EUR
View
B
Retailer 16
-
$6,426 USD
ZAR 103,820 ZAR
View
B
Retailer 17
-
$8,175 USD
View
B
Retailer 18
-
$8,451 USD
£6,654 GBP
View
Retailer 19
-
$8,827 USD
View
Price last confirmed 21 days ago
Most Expensive
NZ Jewellers
ab1275af-3f0b-453c-948a-a532aab2f23a · Sep 27
$9,137 USD
View
Price last confirmed 35 days ago
19 more retailers have this diamond
Prices start from $3,968 USDSave up to $4,483 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
$3,968 USD