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Round|Natural|GIA

3.09ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2547963667

Certificate GIA 2547963667

Diamond specifications and retailer prices

From $20,905 USD
£16,461 GBP
As of November 1, 2026
Save $3,936 USD (16%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $24,841 USD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3.09ct natural round diamond

This 3.09ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2547963667. Listed at 4 retailers as of October 31, 2026, with prices from $20,905 to $24,841, a $3,936 spread on the same certified stone. Blue Nile lists it at $24,841. 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

3.09
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2547963667
Dimensions9.23 × 9.28 × 5.76 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
9.23 mm9.28 mm3.09 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547963667
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

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: Nov 1
Current: $24,841 USD|Low: $20,841 USD|High: $25,418 USD|Avg: $22,729 USD|-2.3%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2$20,905 USD
Retailer 3$21,470 USD
Retailer 4$22,133 USD
Blue Nile$24,841 USD

40 data points across 4 retailers

4 retailers$20,905 USD to $24,841 USD

A
Cheapest Retailer
-
$20,905 USD
£16,461 GBP
A
Retailer 2
-
$21,470 USD
View
A
Retailer 3
-
$22,133 USD
View
Most Expensive
B+
Blue Nile
28798320 · Oct 31
$24,841 USD
View
3 more retailers have this diamond
Prices start from $20,905 USDSave up to $3,936 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
3.09ct Round
$20,905 USD