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Round|Natural|GIA

3.15ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1513275460

Certificate GIA 1513275460

Diamond specifications and retailer prices

From $69,963 AUD
£38,697 GBP
As of October 29, 2026
Save $2,607 AUD (4%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $72,570 AUD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 3.15ct natural round diamond

This 3.15ct natural round sits in the three to five carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1513275460. Listed at 2 retailers as of October 29, 2026, with a relatively tight 4% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

3.15
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1513275460
Dimensions9.29 × 9.33 × 5.82 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Girdle conditionFaceted
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
9.29 mm9.33 mm3.15 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1513275460
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°CuletDepth 62.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $72,570 AUD|Low: $72,570 AUD|High: $72,570 AUD|Avg: $72,570 AUD
September 26, 2026
Diamond Quarter$72,570 AUD

1 data point across 1 retailer

2 retailers$69,963 AUD to $72,570 AUD

B
Cheapest Retailer
-
$69,963 AUD
£38,697 GBP
Most Expensive
C
Diamond Quarter
3.15SI2H156090C3N · Oct 29
$72,570 AUD
£40,139 GBP
View
1 more retailer has this diamond
Prices start from $69,963 AUDSave up to $2,607 AUD

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
3.15ct Round
$69,963 AUD