Round|Natural|GIA

1.57ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 3505260431

Certificate GIA 3505260431

Diamond specifications and retailer prices

From $5,109 USD
As of November 2, 2026
Save $4,430 USD (46%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $9,539 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.57ct natural round diamond

This 1.57ct 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 3505260431. Listed at 4 retailers as of October 30, 2026, with prices from $5,109 to $9,539, a $4,430 spread on the same certified stone. NZ Jewellers lists it at $9,539. 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

1.57
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3505260431
Dimensions7.37 × 7.40 × 4.63 mm
L/W Ratio1.00
Top View
7.37 mm7.40 mm1.57 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3505260431
Side View
Table 57.0%Crown 35.5°GirdlePavilion 40.8°Culet: NoneDepth 62.7%

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 2
Current: $9,539 USD|Low: $4,604 USD|High: $9,587 USD|Avg: $6,186 USD|+9.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 6$4,604 USD
Retailer 4$5,109 USD
Retailer 8$5,585 USD
Retailer 10$5,667 USD
Retailer 2$5,704 USD
Retailer 3$5,704 USD
Retailer 9$5,927 USD
Retailer 7$5,957 USD
Retailer 5$8,325 USD
NZ Jewellers$9,539 USD

6 data points across 10 retailers

4 retailers$5,109 USD to $9,539 USD

B+
Cheapest Retailer
-
$5,109 USD
B
Retailer 2
-
$5,704 USD
View
B
Retailer 3
-
$5,704 USD
View
Most Expensive
B
NZ Jewellers
e7e69f5a-d8ba-4f71-b61c-4e4f5ae36234 · Oct 30
$9,539 USD
View
3 more retailers have this diamond
Prices start from $5,109 USDSave up to $4,430 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+
1.57ct Round
$5,109 USD